Proceedings of the 6th Ibero-American Congress on Sensors – IBERSENSOR 2008
Editors A.C. Seabra University of São Paulo São Paulo, SP, Brazil M.R. Gongora-Rubio Institute of Technological Research São Paulo, Brazil
Prefacio
La Escuela Politécnica de la Universidad de São Paulo (USP), el Instituto de Investigación Tecnológica del Estado de São Paulo (IPT) y el comité permanente IBERSENSOR saludan los investigadores, estudiantes y profesionales participantes del 6to Congreso Iberoamericano sobre Sensores, IBERSENSOR 2008. IBERSENSORS es un forum de la comunidad científica de habla española y portuguesa que trabajan en el campo del desarrollo de sensores de todos los tipos y sus aplicaciones. Esta serie de conferencias se ha llevado a cabo con éxito en varias ocasiones: El primero tuvo lugar en la Habana, Cuba en 1998, el segundo en Buenos Aires, Argentina el 2000, el tercero en Lima, Perú en 2002, el cuarto fue en Puebla, México en 2004, mientras que el quinto fue en Montevideo, Uruguay en 2006. El constante crecimiento y progreso de estas reuniones ha contribuido al desarrollo del potencial de los países de nuestra comunidad en este ámbito, que se constituye en una de las ramas más importantes y de rápido desarrollo científico y tecnológico a nivel mundial. Agradecemos a los autores y revisores por su valiosa colaboración en ofertar la comunidad con excelentes artículos. Agradecemos también a las entidades de financiación CAPES, CNPq, LSITec de Brasil y al CYTED de la Comunidad Europea por sus contribuciones.
San Pablo, Noviembre 2008
Mario Ricardo Gongora-Rubio, Coordinador Tecnico del IBERSENSOR 2008 Antonio Carlos Seabra, Presidente del IBERSENSOR 2008 Carlos Dominguez Horna, Presidente del Comité Permanente IBERSENSOR
Preface
The Polytechnic School at University of São Paulo, the Institute for Technological Research of São Paulo and the IBERSENSOR Permanent Committee are pleased to welcome you to the 6th Ibero-American Congress on Sensors, IBERSENSOR 2008. IBERSENSOR is a forum of the Spanish and Portuguese speaking scientific community, working in the fields of development of sensors of every kind and their applications. This conference series has been successfully carried out in five occasions: The first edition took place at Havana, Cuba in 1998, the second at Buenos Aires, Argentina in 2000, the third at Lima, Peru in 2002, the fourth was at Puebla, Mexico in 2004, while the fifth was at Montevideo, Uruguay in 2006. Steady progress and growth of these meetings has contributed to unleash the potential of our community countries in this field, which constitutes one of the most significant and fast developing branches of the scientific and technical tasks on a worldwide scale. We wish to thank all the authors and reviewers for their strong effort and contribution on selecting high scientific level material for this meeting. We would also like to express our gratitude to the financial supoort received from several agencies, such as CAPES, CNPq, LSITec from Brazil, and CYTED from the European Community.
São Paulo, November 2008
Mario Ricardo Gongora-Rubio, Technical Chair and General Vice-Chair Antonio Carlos Seabra, General Chair Carlos Dominguez Horna, President of the IBERSENSOR Permanent Committee
International Program Committee Carlos Domínguez Horna; CSIC-Centro Nacional de Microlectrónica, ES José Antonio Rodríguez; Universidad de la Habana-Facultad de Física, CU Liliana Fraigi; Instituto Nacional de Tecnología Industrial-CITEI, AR Mario Ricardo Gongora-Rubio; Instituto de Pesquisas Tecnológicas, BR Antonio Carlos Seabra; Universidade de São Paulo, BR Carlos Silva Cárdenas; Pontificia Universidad Católica del Perú, PE Cecilia Jiménez Jorquera; CSIC-Centro Nacional de Microlectrónica, ES Cyro Ketzer Saul; Universidade Federal do Paraná, BR Enrique Ernesto Valdés Zalzibar, Universidad la Habana, CU Francisco Javier Ramírez; Universidade de São Paulo – Escola Politécnica-LME, BR Francisco Valdés; Instituto Tecnológico de la Laguna-DIEE, MX Hector Gomez; Universidad de la República-IFFC, UY José Antonio Plaza Plaza, CSIC-Centro Nacional de Microlectrónica, ES Julián Alonso; Universitat Autònoma de Barcelona -GSB, ES Julio Enrique Duarte; Universidad Pedagógica y Tecnológica de Colombia, CO Manuela Vieira; Instituto Superior de Engenharia de Lisboa-ACEETC, PT Maria Teresa Gomes; Universidade de Aveiro, PT Mariano Aceves; Instituto Nacional de Astrofísica, Óptica y Electrónica, MX Olimpia Arias; Universidad de la Habana, CU Salvador Alegret; Universitat Autònoma de Barcelona, ES
Organizing Committee Armando Antonio Maria Laganá; EPUSP Cyro Ketzer Saúl; UFPR Dione Mari Morita; EPUSP Emilio Del Moral Hernandez; EPUSP Fernando Joseppetti Fonseca; EPUSP Francisco Javier Ramirez Fernandez; EPUSP Marcelo Bariatto Andrade; FATEC-SP Marcelo Paez Carreño; EPUSP Marcos Aparecido Chaves Ferreira; FATEC-SP Nilton Itiro Morimoto; EPUSP Walter Jaimes Salcedo; EPUSP Celina Kikue Massumoto Yunaka; EPUSP Nelson Ordonez; EPUSP Silvia Pereira Bonassa; EPUSP Valeria Gonçalves Minatelli; IPT
Table of Contents Preface
iii Chapter 1 Nanosensors
Modelaje y simulación de un biosensor para detección bioquímica extra/intracelular Rodriguez E. Juan Sebastián, AVILA B. Alba G., Reyes R. Diego F., CMUA, Colombia
3
Catalytic effect of nanostructurated carbon forms for biosensor applications Briza Pérez López, Maria Guix, Salvador Alegret, Arben Merkoçi, UAB, Spain
10
Ultramicroelectrode Arrays (Umas) Based On Carbon Nanotube As Amperometric (Bio)Sensor Transducers 18 M. Pacios, M. Del Valle, M.J. Esplandiu, UAB/UB, Spain Single-Wall Carbon Nanotube/Poly(p-napthaleneethynylene) Composites as Electrode Materials for Supercapacitor Applications 23
M. R. R-Canales, P. Deria, M. J. Therien, P. Gopu, J. Sotero, J J. S.-Avilés , UP/DU/UPR, USA Biosensing Based On Slow Plasmon Nanocavities B. Sepulveda, Y. Alaverdyan, M. Käll, UAB/CUTO, Spain-Sweden
29
Silicon based-photonic biosensors: sensitive, label-free and real-time diagnostic platforms K. E. Zinoviev, B. Sepúlveda, L.G. Carrascosa, C. Domínguez, L.M. Lechuga, IMB/CSIC/NRC, Spain
34
Gold nanoparticle-modified ultramicroelectrode arrays for environmental applications Jahir Orozco , César Fernández-Sánchez and Cecilia Jiménez-Jorquera, CNM, Spain
38
Novel microfluidic devices based on the LTCC technology for the synthesis of metal nanoparticles Sara Gómez-de Pedro, Mar Puyol, Julián Alonso, UAB, Spain
42
New strategies for the biofunctionalisation of carbon nanotubes Ana Belén González-Guerrero, Ernest Mendoza, Eva Pellicer and Laura M. Lechuga (Spain)
47
Sensitivity enhancement of MagnetoOptical Surface Plasmon Resonance Biosensor (MOSPR) D. Regatos, A. Calle, D. Fariña, A. Cebollada, G. Armelles, B. Sepúlveda and L. M. Lechuga (Spain)
48
H2 Sensor with nanocrystalline SnO2 and an innovative Heater and Measurement Device 52 L. T. Alaniz, C. L. Arrieta, M. F. Bianchetti, C. A. Gillari, J. F. Giménez, H. A. Lacomi, D. F. Valerio, N. E. Walsöe de Reca (Argentina) Electrochemical Biosensing In Food For Pathogenic Bacteria Based On Magnetic Nanostructured Transducers 54 Susana Liébana, Anabel Lermo, Susana Campoy, Pilar Cortés, Jordi Barbé, Salvador Alegret, Isabel Pividori (Spain) Gas sensors based on multi wall carbon nanotubes decorated with different metal oxides nanoparticles 60 A. Abbaspourrad, C. Veríssimo, R.V. Gelamo, M. M. da Silva, A. R. Vaz, B. S. A. Moshkalev (Brazil) Composites based on near-percolation composition: Improvement of the electrochemical response 69 Rosa Olivé-Monllau, Maria Jose Esplandiu, Jordi Bartrolí, Mireia Baeza, and Francisco Céspedes (Spain)
Chapter 2 Biosensors Real-time SPR biosensing for early clinical diagnostics
73
J. Treviño, L.G. Carrascosa, A. Calle and L.M. Lechuga. CSIC/CIBER/CNM, Spain Avaliação eletroanalítica do uso de CDs na construção de eletrodos modificados com DNA: Detecção de vírus da hepatite C em amostras soropositivas
P. R. B. de Oliveira Marques, A. Lermo, S. Alegret, M. I. Pividori e H. Yamanaka, UNESP/UAB, Brazil-Spain Propuesta de un protocolo de Calibración de un Medidor de Flujo Sanguíneo con Phantom de Flujo Sanguíneo C. Toledo, L. Leija y A. Vera, CIEA-IPN, Mexico Análisis de la Respuesta Espectral en la Medición de la Turbulencia causada en el Flujo Sanguíneo por la presencia de Estenosis en Vasos
J. Solano, F. García, M. Vázquez, I. Sánchez, M. Fuentes y E. Rubio, UNAM, Mexico
80
88
97
Electrochemical Biosensors for the determination of antioxidant capacity M. Cortina, C. Calas-Blanchard, J.-L. Marty, BIOMEM/UP, France
103
Impedance Characterization and Modeling of Microelectrodes for Neural Recording Marcelo Bariatto Andrade Fontes, IMEC, Belgium
108
Sensing bioelectric signals with concave electrodes: II. Experimental and analytical approaches to electrode design R Suarez Antola, UCU, Uruguay
114
Integration of flexible sensors applied to manipulation of electrical actuators Vázquez Rueda L. A., Flores García Francisco, UTT/ITL, Mexicos
122
Design and construction of ultrasonic Doppler transducers for blood flow measurement using Finite Element Analysis I. Sánchez, H. Faustmann, P. Acevedo, M. Fuentes, UNAM/UAS, Mexico-Germany
129
Monitoring biofilm growth in several materials with an acoustic wave sensor O. Gonçalves, J. Barrios, S. L. Marçal, M. Peres, M. T. S. R.Gomes, UA, Portugal
135
Manipulación De Protozoos Por Ultrasonido Flavio Humberto Fernández Morales, Julio Enrique Duarte (Colombia)
140
CDtrodo de ouro modificado com SAM de 4-(metilmercapto)benzaldeído no desenvolvimento de imunossensor M. V. Foguel, H. Yamanaka, A. V. Benedetti, A. A. P. Ferreira (Brazil)
146
Modificação e caracterização de SPE com SAMs de cistamina e glutaraldeído para imobilização da proteína Tc85 de T. cruzi A. A. P. Ferreira, H. Yamanaka, A. V. Benedetti (Brazil)
150
Development of Polystyrene (PS) micro-spheres for biological sensors applications Elis Moura Stori, Cesar Liberato Petzhold, Eduardo de Oliveira da Silva and Cyro Ketzer Saul (Brazil)
154
Evaluación de actividad de Streptomyces sp. M7 adheridas a un soporte sólido M.L. López Rodriguez, C.E. Giacomelli, C.J. Felice y R. Madrid (Argentina)
161
Campo Acústico De Transductores De Difracción Controlada. Alina Aulet, José Antonio Eiras y Carlos Negreira (Uruguay)
164
Prototipo De Estimulación Eléctrica Para El Tratamiento Neurológico De Un Modelo Animal En Coma J. Alcantara C., Callupe R. (Peru)
168
Amperometric electronic tongue applied to coffee classification. A. Durán, A. Gutés, J. A. Rodríguez, M. del Valle (Cuba)
173
Impedimetric Detection of DNA Hybridization using Carbon Nanotubes as Sensing Platform A. Bonanni, M.J. Esplandiu, S. Alegret, M. del Valle (Spain)
179
Screen-printed electrochemical biosensors based on magnetic core-shell nanoparticles Longinotti, G.; Lloret, P.; Ybarra, G.; Moina, C., Hermida, L., Milano, O.; Roberti, M.; Malatto, L; Fraigi, L (Argentina)
181
Genossensor eletroquímico para câncer de próstata baseado em matriz de poli(3-aminofenol) 184 Diego L. Franco, Adriana F. Neves, Luiz R. Goulart Filho, Ana G. Brito-Madurro, João M. Madurro (Brazil) Diseño de un sistema de adquisición de datos ultrasónicos orientado a aplicaciones biomédicas
186
D. Santos, R. Lavarello, B. Castañeda (Peru) Recognition of brain activity in EEG 192 Christian Humberto Flores Vega, Haroldo Higuibu, Antônio Carlos Bastos de Godoi, Francisco Javier Ramírez Fernández (Brazil) LTCC microsystem incorporating a microcolumn with immobilized β-galactosidase for enzymatic spectrophotometric assays 196 Vítor Ribeiro, Carmen López, Gregorio Álvaro, Mireia Baeza, Josep López-Santín and Julián Alonso (Spain)
Chapter 3 Chemical Sensors Biosensores amperométricos basados en polifenoloxidasas para la determinación de la capacidad antioxidante en extractos de uvas Ibarra E. P., R. Silva M. T., Calas-Blanchard C., Marty J. L., UAMI/UP, Mexico-France
200
Photocurrent Chemical Image Response of MOS Gas Sensor as a Nose System M. S. Braga, K. R. Maciel de Matos, F. J. Ramirez Fernandez, D. S. Santos, W. J. Salcedo, USP, Brazil
204
Aplicación de una Lengua Electrónica Voltamétrica para Clasificación de Vinos y Estudio de Correlación con la Caracterización Química y Sensorial
Á. A. Arrieta, M. L. Rodríguez-Méndez, J. A. De Saja, UPBM/UV, Colombia-Spain
Biosensor de Glucosa basado en electrodo de acero inoxidable electrodepositado con Oxido de Iridio y Glucosa Oxidasa C. C. M. Martinez, R. E. Madrid, C. J. Felice, CONICET, Argentina Desarrollo de Inmunosensores y de Biosensores Enzimáticos para Aplicaciones Agroalimentarias A. Montoya, J. J. Manclús, J, Sáiz, A. Arnau, Y. Jiménez, C. March, UPV, Spain
208
218
223
Resolution Of Heavy Metal Mixtures From Highly Overlapped Asv Voltammograms Employing A Wavelet Neural Network 227 Juan Manuel Gutiérrez, Laura Moreno-Barón, Francisco Céspedes, Roberto Muñoz, Manel Del Valle (Spain) Construcción Y Evaluación De Un Sensor Químico Con La 1-Benzoil-3,3-Dietiltiourea Y Su Aplicación … 228 Ana R. L. Fraga, Aimee V. Pacheco, Juan J. Chacón, Alicia D. García, Ana M. Plutín Stívens, Marcia B. Sanchéz (Cuba) Effect of material morphology on the response of NO2 sensor based on ZnO thin film: experiment and theory R. Ferro, J.A. Rodríguez (Cuba)
233
Simulación eléctrica del comportamiento del ISFET Víctor Prado, Carlos Silva (Perú)
237
Conducting polymers as scent sensors J. P. H. Lima and A. M. de Andrade (Brazil)
241
Caracterização de Pseudoeletrodos de Pt, Ag e Au como Referência na Medição de pH Utilizando ISFETs Robson Scaff, Sebastião Gomes dos Santos Filho e Marcelo Bariatto Andrade Fontes (Brazil)
245
Study of Poly(o-ethoxyaniline)/Poly(2,4 etylenedioxythiophene) thin film as ethanol vapor sensor S. T. R. Ozaki, L. G. Paterno and F. J. Fonseca (Brazil)
250
Desarrollo De Un Microsensor Tipo Chemfet Para La Determinacion De Nitratos En Aguas A. Puente-Santiago, O. Arias-de Fuentes, M. Arada, A. Lastres, E. Valdés y C. Jiménez (Cuba)
252
Determinação Da Constante Cinética Da Lectina Km+ Pelo Ligante Peroxidase Por Meio Da Técnica De Microbalança… Pesquero, N.C., Pedroso, M. M., Bueno, P. R., Roque-Barreira, M. C., Faria, R. C. (Brazil)
257
Evaluation of air coupling ultrasonic transducers for surface roughness measurement N. Pérez, C. Negreira, F. Montero de Espinosa (Uruguay)
263
Chapter 4 Optical Sensors Fully Integrated UV to NIR Silicon Sensor and Conditioning Amplifier in CMOS Technology 271 M.A-Mijares, J. A. Díaz, J. M. Rocha, J. Pedraza, R. C. Ramos, X. Formatje, C. Dominguez, D. Berman, CNM/US, Spain-Mexico Biosensor por fluorescencia integrado con un filtro espectral. V.J. Cadarso, C. Fernández-Sánchez, A. Llobera, C. Domínguez., IMB/CSIC, Spain
276
Optical Wavelength-division multiplexing/demultiplexing devices M. Vieira, P. Louro, M A Vieira, A. Fantoni, M. Fernandes, M. Barata, ISEL/UNINOVA, Portugal
279
Fabricación De Un Microactuador Electrotérmo-Mecánico Para La Manipulación De Fibras Ópticas J.M. Castelblanco, S. Lopera, J.C. Gaviria, R.A. Betancur, UM-M, Colombia
285
Tunable Full-Field Hollow And Hybrid Sol-Gel Photonic MicroTAS V. J. Cadarso, C. Fernández-Sánchez, A. Llobera, M. Darder and C. Domínguez, IMB/ICMM-CSIC, Spain
289
Voltage controlled WDM devices in the visible spectrum: A SPICE simulation M A Vieira, A. Fantoni, M. Vieira, P. Louro, M. Fernandes (Portugal)
294
Silicon Wafer Characterization By Pcd Technique Aiming Optical Sensor Fabrication Based On Photovoltaic Technology N. Stem, C. A. S. Ramos, A. F. Beloto and M. Cid (Brazil)
300
Optoelectronic device Modelling in SPICE T. Barçante Teixeira, T. de Oliveira Rocha and D. W. de Lima Monteiro (Brazil)
306
Porous Silicon Photonic Crystal for Refractometer Sensor Danilo Roque Huanca and Walter Jaimes Salcedo (Brazil)
312
Cyanine-aniline dyes as fuoroionophores for miniaturized optical sensors M. Puyol, A. Silva-Ferreira, P. Gomes and J. Alonso (Spain)
316
Chapter 5 Environmental Applications Microfabricated Biosensors for the Determination of Biochemical Oxygen Demand (BOD) in Water Weinstock A.; Ybarra G. ; Bonetto, M.; Cortón E., Fraigi, L.; Moina. C, INTI/UBA-CONICET, Argentina. Monolithic LTCC Based Photometric Microflow analyzer for the Automatic Determination of Phosphate Ion Using the multicommutation aproach
Z.M. Da Rocha, C.S Martinez-Cisneros, M.A.C. Ferreira, N. Ibáñez-García, M.R.Gongora-Rubio , A.C. Seabra, J. Alonso, USP/UAB, Barzil-Spain
323
327
LTCC-Based Micro Total Analysis System for Amperometric Detection C.S. Martínez-Cisneros, Z.M. da Rocha, F. Valdés, M.R. Gongora-Rubio, A.C. Seabra and J. Alonso, USP/UAB, Brazil-Spain
329
Sensor De Oxigênio Dissolvido Óptico Utilizando A Técnica Sol-Gel Sobre LTCC M.A.C. Ferreira, Z.M. Da Rocha, A.C. Seabra, USP, Brazil
333
Development of a portable water quality analyzer G.Comina, M.Nissfolk, J.L.Solis, (Perú)
338
Desenvolvimento De Sensores De Metais Pesados De Baixo Custo Leandro Rodrigues Dias, Clayton Vieira Sales, Marcelo Bariatto Andrade Fontes (Brazil)
344
Real Time Water Specific Heat Capacity Measurement System for Environmental Applications Sandro Vasconcelos, Cyro Ketzer Saul (Brazil)
348
Desarrollo De Un Pseudo-Electrodo De Referencia De Ag/Agcl Integrado En Un Microsensor De Silicio
354
Fernando Luis de Almeida, Isabel Burdallo, Marcelo Bariatto Andrade Fontes y Cecilia Jimenez (Brazil) Voltammetric detection of Cu (II) in soil extract samples using modified ultramicroelectrode arrays 358 Jahir Orozco, César Fernández-Sánchez, Julián Alonso, Eva Arasa, Francisco Valdés and Cecilia JiménezJorquera (Spain) Microbial-Based Electrochemical Bioassay For Water-Quality Analysis. One Step Towards A Disposable Biosensor System. Bonetto, M.; Weinstock, A.; Fraigi, L.; Sacco, N.; Cortón, E. (Argentina)
362
Relative Humidity Sensor Based on Rough Polysilicon Thin Films and Interdigited Out-of-Plane Electrodes Structure 368 P. Zambrozi Jr. and F. Fruett (Brazil) Inmunoensayos De Residuos Farmacológicos En Muestras Ambientales. Perspectivas En Inmunosensores Electroquímicos 372 S. Fabiano, A. Lermo, S. Hernández, S. Kergaravat, M.-P Marco, R. Galve, S. Alegret, M. I. Pividori (Argentina) Voltammetric screen-printed sensors for lead detection in sea water Gemma Aragay, Anna Puig-Font, Arben Merkoçi (Spain)
376
Nanopowders of tin oxide doped with rare earths for application as gas sensing material for f uel qualification Pilar Hidalgo, Henrique E. M. Peres, F. J. Ramirez-Fernandez (Brazil)
385
Generación de electricidad en una celda de combustible microbiana mediada utilizando microánodos descartables Sacco, Natalia; Bonetto, Maria Celina y Cortón, Eduardo. (Argentina)
388
Instrumentación aplicada al monitoreo de variables climáticas. Jáuregui García José Miguel, González Cervantes Guillermo, Flores García Francisco (Mexico)
393
Chapter 6 Agroindustrial and Food Industry Applications System on chip for portable cooking oil quality determination K. A. S. S. Lustosa, A. M. P. Santos, E. J. P. Santos, UFPE, Brazil
401
Determination of antioxidant capacity with a simple electrochemical method Y. Wang, C. Blanchard-Calas, B. Liu And J-L. Marty (France)
408
New Electrochemical Magneto Immunosensing And Genosensing Strategies For Food Safety A. Lermo, S. Campoy, J. Barbé, S. Alegret, M.I. Pividori (Spain)
413
Caracterización de la enzima lacasa en biocompositos para la determinación del índice de polifenoles en vino 419 Silvia Gómez, Manel Del Valle, Salvador Alegret, Isabel Pividori (Spain) Quality detection in Indian honey using sensor array Rohini P. Mudhalwadkar, Ashok A. Ghatol (India)
426
Desarrollo de un biosensor electroquímico de lectura directa de hibridaciones de AND 430 J. B. Cotero-Ochoa, A. Cortez-Ibarra, C. A. Sánchez-Martínez, E. Martínez-Guerrero, E. J. Herrera-López, E. Flores-Berrios (Mexico) Water analysis using an electronic tongue system combined with Fuzzy logic G.S. Braga, L.G. Paterno, F.J.Fonseca (Brazil)
435
Detección electroquímica del crecimiento de Escherichia coli en leche cruda con sensores basados en electrodos planos de platino 438 Houari Cobas Gómez, Alian Mesa Gila, Sonnia Pavoni Oliver, Rolando Contreras, Ángela Zayas, Estrella Álvarez (Cuba)Cuba
Chapter 7 MEMS, Microfluidics, Actuators and LTCC Devices Coil design for a low-loss inductive proximity sensor in LTCC T. Geiling, H. B. de Torres, R. Perrone, J. Müller, M. Hoffmann, IMN, Germany
446
Development of a Microsystem for Plasma Generation R. K. Yamamoto; R. S. Pessoa; M. R. Gongora-Rubio; Homero S. Maciel, FATEC/USP/ITA/IPT, Brazil
450
Desenvolvimento De Um Microtrocador De Calor Com Multicanais Retangulares Para Gases Em Contracorrente E. Vásquez-Alvarez; F. T. Degasperi, M.R. Gongora-Rubio e R. Giudici, USP/FATEC/IPT, Brazil LTCC Microfluidic Device For Buffer Solutions Generation M.R. da Cunha, M. R. Gongora Rubio, I. D. Alvim, M. I. Ré, IPT, Brazil Sismic parameter evaluation in loaded sand and gravel samples using general purpose piezocrystals Armando Luis Imhof, Angel César Veca (Argentina)
456 463
469
Study of Residual stress in PECVD a-SiC:H films for MEMS applications Ary Morales, Gustavo Rehder, Inés Pereyra (Brazil)
474
Evaluación de la tecnología MetalMUMPs para la fabricación de un sensor de flujo de aire. Eduardo Martín Rodríguez, Estrella González Rodríguez (Cuba)
479
Célula de carga com LTCC Renato Shiguemitsu Mori, Mario Ricardo Gongora Rubio (Brazil)
487
Integrated Optical Switch M. Stochero, G. Rehder, M. I. Alayo (Brazil)
491
Sistema de Estabilização de Fluxo usando Capacitor Fluídico Danusa Cristina Martins Bazani, Marcio Rodrigues da Cunha, Cyro Ketzer Saul, Mário Ricardo Gongora-Rubio (Brazil)
497
Physical and mechanical sensors based on thin-film bulk acoustic wave resonators (FBAR) Humberto Campanella, Josep Montserrat, Arantxa Uranga, Jaume Esteve (Spain)
502
Thermal Behavior of a Heat-actuated Microcantilever M.Narducci, E.Figueras, N.Sabaté, M.Vellvehí, I.García, L.Fonseca, J.Santander and C.Cané (Spain)
506
Electrochemical Detection Nanosystems for Lab-On-A-Chip with Capillary Electrophoresis Adriano Ambrosi, Briza Perez, Arben Merkoçi (Spain)
511
PolyMEMS INAOE, a Surface Micromachining Fabrication Module and the Development of Microstructures for Residual Stress Analysis 513 A. Alanís, D. Díaz, C. Reyes. C. Zúñiga, A. Torres, P. Rosales, J. Molina, J. Hidalga, M. Linares, M. Aceves, and W. Calleja (Mexico)
Chapter 8 Materials, fabrication & packaging techniques for Microfluidics Silicon Microtips Sharpening Method for Field Emission Applications M. O.S. Dantas, E. Galeazzo, H. E. M. Peres, F. J. Ramirez-Fernandez, USP, Brazil
521
Medición Del Potencial De Difusión Vde(T) Atravéz De La Capacidad Neutral Cn Alicia Polanco y Agnes Nagy, CIM, Cuba
527
Fabricação de eletrodos impressos com tecnologia de filme espesso e caracterização eletetroquímica Antonio Ap. Pupim Ferreira, Hideko Yamanaka, Assis V. Benedetti, Cecílio S. Fugivara, Mário Ricardo Gongora-Rubio (Brazil)
531
Fabrication Of A Sic Piezoresistive Pressure Microsensor M. A. Fraga, M. Massi (Brazil)
535
Microfluidic Systems Fabricated By Room Temperature Direct Bonding Process In 7059 Glass Substrates. 539 J. N. Schianti, M. N. P. Carreño (Brazil) Study Of Arrow Waveguide Fabrication Process For Improving Scattering Losses D. O. Carvalho, S. L. Aristizábal., K. F. Albertin, and M. I. Alayo (Brazil) Mejoras en el proceso de transferencia electrónica en biosensores amperométricos enzimáticos M.L. Cortez, A.L. Cukierman, F. Battaglini
546
554
(Argentina)
Sistema descartable de multielectrodos de oro y su aplicación en ensayos múltiples con detección de la unión antígeno –anticuerpo. Ana Sol Peinetti, Graciela Priano, Graciela A. González y Fernando Battaglini (Argentina) Custom Packaging Design of Microsystem and Microelectronics Devices Milano, O.; Roberti, M.; Fraigi, L. (Argentina)
556 558
UV-Ozone treatment on ITO using modified high-pressure mercury vapor lamp for assembly of polymeric devices with RBPV-DODM-PPV 562 E. R. Santos, T. E. Schuler, S. H. Wang, E.; C. Burini Junior,M. A. Yamasoe, F. J. Fonseca, E. A. T. Dirani, A. M. de Andrade (Brazil) Utilização De Um Laser De Co2 De Baixo Custo Para Microusinagem De Cerâmicas Verdes LTCC Marcio Rodrigues da Cunha, Elsa Vásquez-Alvarez, Mário R. Gongora-Rubio (Brazil)
570
Evaluation Of Different Working Electrodes For Voltammetric Lead Detection In LTCC Microsystems Eva Arasa-Puig and Julián Alonso (Spain)
576
Chapter 9 Instrumentation, Signal Processing and Communications A biosensing platform based on a bimodal waveguide transducer K. E. Zinoviev, C. Domínguez, and L. M. Lechuga (Spain)
582
Water Waves Measurement Instrument with Conductance Compensation 583 Wagner M. Rossini, Carlos A. Guedes Freire de Souza, Kazuo Nishimoto, Jose Jaime da Cruz & Mário Ricardo Gongora-Rubio (Brazil) Nueva interfaz cuasi-digital para sensor de gas basada en el circuito convertidor generalizado de impedancia. 588 A. Durán, J. Sánchez, E. Navarro, S. Casans, J. A. Rodríguez, D. Ramírez (Cuba) Detecção e Localização de Efeito Corona através de técnicas de Radio Localização. José Kleber da Cunha Pinto, Marcos Aurélio Luqueze, Luiz Fernando Justo (Brazil)
597
Nuevo Sistema Basado En Un Microcontrolador Psoc Para La Caracterizacion De Microsensores A. Blanco-Rodríguez, L. Velazco-Molina, O. Arias-de Fuentes y A. Durán-Carrillo (Cuba_)
603
Red de sensores Inteligente via Ehternet aplicada a la caracterización de sensores ISFET. Silvia Casans, A. Edith Navarro, Diego Ramírez, Jaime Sánchez, Alejandro Durán. (Spain)
607
Instrumento de Medida Inteligente aplicado a la investigación en sensores ISFET. 613 Silvia Casans, A. Edith Navarro, Lamia Bouchou, Diego Ramírez, Jaime Sánchez, Alejandro Durán. (Spain) Multi ISFET-metro Virtual usando PIC y PC 618 Enrique E. Valdés Zaldivar , Marcos Machado Monserrat , Giselle Acosta Cabrera, Carlos Domínguez Horna (Cuba)
Método de Linealización dinámica para un acondicionador de temperatura/tiempo utilizando termistores 622 E. Castro Montero, A.L. Salazar Mustelier, D. Ramírez Muñoz , J. Sánchez Moreno (Spain) Uso de Redes Neurais Artificiais na Descoberta de Conhecimento a partir de Dados e Imagens de Sensores Clodis Boscarioli, Leandro Augusto da Silva, Emílio Del Moral Hernandez (Brazil) Evaluation of Gasoline Adulteration Using an Interdigitated Microsensor Lucas Gonçalves Dias Mendonça, Delson Torikai, Nilton Itiro Morimoto,Ricardo Cury Ibrahim (Brazil) Impact of Duplicates in Energy Consumption of Wireless Sensor Networks using the GSP protocol Maria Calle, Joseph Kabara (Colombia) Influência da Autenticação de Dados Sobre o Desempenho de Redes UMTS Marcel Stefan Wagner, Wagner Luiz Zucchi (Brazil)
629 636
642 648
Análisis y diseño de un circuito driver basado en convertidor generalizado de impedancias para un actuador piezoeléctrico D. F. Novoa Díaz, D. Ramírez Muñoz, J. Sánchez Moreno (Spain)
650
Uma Abordagem às Camadas Físicas e de Rede das Bandas ISM 915MHz e 2.4GHz: Um Estudo de Qualidade das normas IEEE 802.15 e IEEE 802.15.4 – Padrão ZigBee Jorge Rodolfo Beingolea Garay, Sergio Takeo Kofuji (Brazil)
659
Using FPAA's in industrial instrumentation Alberto Delgadillo, Ricardo Pirajan (Colombia)
665
Mejora del Ancho de Banda un Sensor de Corriente eléctrica magnetorresistivo J. Sánchez Moreno , D. Ramírez Muñoz (Spain)
673
System for acquisition and analysis of images for species detection Tello Mijares Santiago, Flores García Francisco. (Mexico)
677
Língua Eletrônica: Uma Aproximação Da Curva De Calibração Utilizando Funções Desvios E Multilayer Perceptrons Itamar M. Barbosa, Emilio del Moral Hernandez , Daniel C. Boluda , Mannel del Vale (Brazil)
683
Electron multiplyong charge couple device system test to Brazilan tunable filter image Julian David Rodriguez Ramirez, Dani Guzman, Claudia Mendes de Oliveira,Francisco Javier Ramirez Fernandez (Brazil)
691
Sensor de pressão piezo-resistivo para aplicações automotivas Paulo F. Ciampa, A. C. Seabra (Brasil)
695
A general purpose Wireless Sensor Network node design, based on IEEE 802.15.4 and Zigbee compliant standards, intended to experimentation, testbed, educational and commercial OEM prototypes, Edriano C. Araujo, A.C. Seabra (Brasil) Design and fabrication of Diffractive Microlenses for WDM Applications Ricardo T. Catelli, A. C. Seabra (Brasil)
697
IBERSENSOR 2008
6th Iberoamerican Congress on Sensors November, 24-26, 2008, São Paulo, Brasil
The Polytechnic School at University of São Paulo, the Institute for Technological Research of São Paulo and the IBERSENSOR Permanent Committee are pleased to welcome you to the 6th IberoAmerican Congress on Sensors, IBERSENSOR 2008. IBERSENSOR is a forum of the Spanish and Portuguese speaking scientific community, working in the fields of development of sensors of every kind and their applications. This conference series has been successfully carried out in five occasions: The first edition took place at Havana, Cuba in 1998, the second at Buenos Aires, Argentina in 2000, the third at Lima, Peru in 2002, the fourth was at Puebla, Mexico in 2004, while the fifth was at Montevideo, Uruguay in 2006. Steady progress and growth of these meetings has contributed to unleash the potential of our community countries in this field, which constitutes one of the most significant and fast developing branches of the scientific and technical tasks on a worldwide scale.
IBERSENSOR 2008 Program Monday, Nov-24 8:00
12:30 – 14:00
Registration
8:30 – 12:30
Registration Tutorials I and II Lunch
14:00hs
Opening Session
14:30 – 15:45 15:45 16:15 16:15 – 17:30 18:00 – 19:00
Keynote I Cofee Break Keynote II CYTED Meeting
Tuesday, Nov 25 9:00 – 10:15 10:15 – 10:45 10:45 – 12:05 12:05 – 14:00 14:00 – 15:20 15:20 – 15:500 15:50 – 18:00
Poster Session
18:00 – 19:00
PROSUL Meeting
9:00 – 10:15 10:15 – 10:45 10:45 – 12:05 12:05 – 14:00 14:00 – 15:00 15:00 – 15:30 15:30 – 17:30 17:30 – 18:00 18:00 – 18:30
Banquet Dinner
19:00 20:00
21:00
SPONSORS
Wednesday, Nov 26
Keynote III Cofee Break Sessions I, II, III Lunch Sessions IV, V Cofee Break
Keynote IV Cofee Break Sessions VI, VII, VIII Lunch Sessions IX, X Cofee Break Poster Session Best Student Paper Award
Closing Session IBERSENSOR Permanent Committe. Meeting
IBERSENSOR 2008
6th Iberoamerican Congress on Sensors November, 24-26, 2008, São Paulo, Brasil
Invited Talks Name
Institution
Talk
Thomas C. Harmon
University of California -Merced – EUA
K I: The Pan-american Sensors Initiative for Environmental Observations
Kenneth A. Peterson
Sandia National Laboratories Albuquerque – USA
K II: A Summary and Critical Look at LTCC Processes and Applications for Microsystems
Martin Richter
Fraunhofer Institute for Reliability and Microintegration IZM, Munich Division– Germany
K III: Micropumps for Applications in Medicine, Fuel Cells and Lab Technology
Carlos Domingues Horna
Centro Nacional de MicroeletrônicaBarcelona – Spain
K IV: Opto-Chemical Sensors
Tutorials I. Nanotechnology for Sensors and Microsystems 8:30–9:20
Advanced Materials for Optical Sensors, Prof. Jose Antonio Rodríguez, Univ. of La Habana – Cuba
9:20–10:10
Detection biosystems based on nanoparticles, Prof Arben Merkoçi, ICREA & Catalan Institute of Nanotechnology - Spain
10:10–10:40
Coffee-break
10:40–11:30
Modified Microsensors with nanostructured materials, Prof. Cecilia Jimenez, CNM -Centro Nacional de Microeletrônica – Barcelona – Spain
11:30–12:20
Nanosensors based on polimeric materials, Prof. Fernando J. Fonseca, Univ. of São Paulo – Brazil
II. Nanofabrication Processes 8:30–9:20
Focused Ion Beam Techniques (FIB) for Nanofabrication, Prof. Stanislav Moshkalev, Univ. Campinas – Brazil
9:20–10:10
Advanced Nanolithography for Research and Development, Prof. A. C. Seabra, Univ. São Paulo – Brazil
10:10–10:40
Coffee-break
10:40-11:30
Electrospray and Electrospinning as Nanofabrication Tools, Prof Cyro Ketzer Saul, Federal Univ. of Parana – Brazil
11:30-12:20
Microfluidics as a Bottom-up Nanofabrication Technique, Prof. Mario R. Gongora-Rubio, Institute for Technological Research – Brazil
Environmental Ap.
Session I Session II Session III
Nanossensors I Biosensors II
Session IV Session V
Nanosensors II
Tuesday 10:45 – 12:05 Tuesday 14:00 – 15:20
Biosensors I
IBERSENSOR 2008 Preliminary Program: Oral Presentations – TUESDAY, 15:50h – 18:00h 10:4511:05
IB08-009
11:0511:25
IB08-012
11:2511:45
IB08-030
11:4512:05
IB08-115
10:4511:05
IB08-025
11:0511:25
IB08-143
11:2511:45
IB08-144
11:4512:05
IB08-148
10:4511:05
IB08-127
11:0511:25
IB08-083
11:2511:45
IB08-092
11:4512:05
IB08-133
14:0014:20
IB08-022
14:2014:40
IB08-027
14:4015:00
IB08-031
15:0015:20
IB08-125
14:0014:20
IB08-002
14:2014:40
IB08-005
14:4015:00
IB08-024
15:0015:20
IB08-141
Real-time SPR biosensing for early clinical diagnostics J. Treviño, L.G. Carrascosa, A. Calle and L.M. Lechuga. CSIC/CIBER/CNM, Spain Avaliação eletroanalítica do uso de CDs na construção de eletrodos modificados com DNA: Detecção de vírus da hepatite C em amostras soropositivas Propuesta de un protocolo de Calibración de un Medidor de Flujo Sanguíneo con Phantom de Flujo Sanguíneo C. Toledo, L. Leija y A. Vera, CIEA-IPN, Mexico Análisis de la Respuesta Espectral en la Medición de la Turbulencia causada en el Flujo Sanguíneo por la presencia de Estenosis en Vasos Microfabricated Biosensors for the Determination of Biochemical Oxygen Demand (BOD) in Water Weinstock A.; Ybarra G. ; Bonetto, M.; Cortón E., Fraigi, L.; Moina. C, INTI/UBA-CONICET, Argentina. Monolithic LTCC Based Photometric Microflow analyzer for the Automatic Determination of Phosphate Ion Using the multicommutation aproach LTCC-Based Micro Total Analysis System for Amperometric Detection C.S. Martínez-Cisneros, Z.M. da Rocha, F. Valdés, M.R. Gongora-Rubio, A.C. Seabra and J. Alonso, USP/UAB, Brazil-Spain Sensor De Oxigênio Dissolvido Óptico Utilizando A Técnica Sol-Gel Sobre Ltcc M.A.C. Ferreira, Z.M. Da Rocha, A.C. Seabra, USP, Brazil Modelaje y simulación de un biosensor para detección bioquímica extra/intracelular Rodriguez E. Juan Sebastián, AVILA B. Alba G., Reyes R. Diego F., CMUA, Colombia Catalytic effect of nanostructurated carbon forms for biosensor applications Briza Pérez López, Maria Guix, Salvador Alegret, Arben Merkoçi, UAB, Spain Ultramicroelectrode Arrays (Umas) Based On Carbon Nanotube As Amperometric (Bio)Sensor Transducers M. Pacios, M. Del Valle, M.J. Esplandiu, UAB/UB, Spain Evaluation of Composite Electronic Materials Based Upon Single-Wall CNTs and Highly Charged Poly(arylenethynylene)s for Supercapacitor Applications Electrochemical Biosensors for the determination of antioxidant capacity M. Cortina, C. Calas-Blanchard, J.-L. Marty, BIOMEM/UP, France Impedance Characterization and Modeling of Microelectrodes for Neural Recording Marcelo Bariatto Andrade Fontes, IMEC, Belgium Sensing bioelectric signals with concave electrodes: II. Experimental and analytical approaches to electrode design R Suarez Antola, UCU, Uruguay Integration of flexible sensors applied to manipulation of electrical actuators Vázquez Rueda L. A., Flores García Francisco, UTT/ITL, Mexicos Biosensing Based On Slow Plasmon Nanocavities B. Sepulveda, Y. Alaverdyan, M. Käll, UAB/CUTO, Spain-Sweden Silicon based-photonic biosensors: sensitive, label-free and real-time diagnostic platforms K. E. Zinoviev, B. Sepúlveda, L.G. Carrascosa, C. Domínguez, L.M. Lechuga, IMB/CSIC/NRC, Spain Gold nanoparticle-modified ultramicroelectrode arrays for environmental applications Jahir Orozco , César Fernández-Sánchez and Cecilia Jiménez-Jorquera, CNM, Spain Novel microfluidic devices based on the LTCC technology for the synthesis of metal nanoparticles Sara Gómez-de Pedro, Mar Puyol, Julián Alonso, UAB, Spain
Session VI
11:2511:45
IB08-091
11:4512:05
IB08-135
10:4511:05
IB08-013
11:0511:25
IB08-015
11:2511:45
IB08-020
11:4512:05
IB08-130
10:4511:05
IB08-048
11:0511:25
IB08-093
11:2511:45
IB08-109
11:4512:05
IB08-065
14:0014:20
IB08-046
14:2014:40
IB08-016
14:4015:00
IB08-062
14:0014:20
IB08-098
14:2014:40
IB08-131
14:4015:00
IB08-041
Fluid Management Devices
IB08-074
Optical Sensors
Session VII
11:0511:25
Chemical Sensors
Session VIII
IB08-018
Sensor Applications I
Session XI
10:4511:05
Sensor Applications II
Session X
Wednesday 14:00 – 15:00
Wednesday 10:45 – 12:05
IBERSENSOR 2008 Preliminary Program: Oral Presentations - WEDNESDAY Coil design for a low-loss inductive proximity sensor in LTCC T. Geiling, H. B. de Torres, R. Perrone, J. Müller, M. Hoffmann, IMN, Germany Development of a Microsystem for Plasma Generation R. K. Yamamoto; R. S. Pessoa; M. R. Gongora-Rubio; Homero S. Maciel, FATEC/USP/ITA/IPT, Brazil Desenvolvimento De Um Microtrocador De Calor Com Multicanais Retangulares Para Gases Em Contracorrente E. Vásquez-Alvarez; M.R. Gongora-Rubio e R. Giudici, USP/FATEC/IPT, Brazil Ltcc Microfluidic Device For Buffer Solutions Generation M.R. da Cunha, M. R. Gongora Rubio, I. D. Alvim, M. I. Ré, IPT, Brazil Fully Integrated UV to NIR Silicon Sensor and Conditioning Amplifier in CMOS Technology M.A-Mijares, J. A. Díaz, J. M. Rocha, J. Pedraza, R. C. Ramos, X. Formatje, C. Dominguez, D. Berman, CNM/US, Spain-Mexico Biosensor por fluorescencia integrado con un filtro espectral. V.J. Cadarso, C. Fernández-Sánchez, A. Llobera, C. Domínguez., IMB/CSIC, Spain Optical Wavelength-division multiplexing/demultiplexing devices M. Vieira, P. Louro, M A Vieira, A. Fantoni, M. Fernandes, M. Barata, ISEL/UNINOVA, Portugal Cyanine-aniline dyes as fuoroionophores for miniaturized optical sensors M. Puyol, A. Silva-Ferreira, P. Gomes and J. Alonso, CNM, Spain Biosensores amperométricos basados en polifenoloxidasas para la determinación de la capacidad antioxidante en extractos de uvas Ibarra E. P., R. Silva M. T., Calas-Blanchard C., Marty J. L., UAMI/UP, Mexico-France Photocurrent Chemical Image Response of MOS Gas Sensor as a Nose System M. S. Braga, K. R. Maciel de Matos, F. J. Ramirez Fernandez, D. S. Santos, W. J. Salcedo, USP, Brazil Aplicación De Una Lengua Electrónica Voltamétrica Para La Clasificación De Vinos Y Estudio De Correlación Con La Caracterización Química Y Sensorial Á Biosensor de Glucosa basado en electrodo de acero inoxidable electrodepositado con Oxido de Iridio y Glucosa Oxidasa C. C. M. Martinez, R. E. Madrid, C. J. Felice, CONICET, Argentina Tunable Full-Field Hollow And Hybrid Sol-Gel Photonic MicroTAS V. J. Cadarso, C. Fernández-Sánchez, A. Llobera, M. Darder and C. Domínguez, IMB/ICMM-CSIC, Spain Medición Del Potencial De Difusión Vde(T) Atravéz De La Capacidad Neutral Cn Alicia Polanco y Agnes Nagy, CIM, Cuba Silicon Microtips Sharpening Method for Field Emission Applications M. O.S. Dantas, E. Galeazzo, H. E. M. Peres, F. J. Ramirez-Fernandez, USP, Brazil System on chip for portable cooking oil quality determination K. A. S. S. Lustosa, A. M. P. Santos, E. J. P. Santos, UFPE, Brazil Monitoring biofilm growth in several materials with an acoustic wave sensor O. Gonçalves, J. Barrios, S. L. Marçal, M. Peres, M. T. S. R.Gomes, UA, Portugal Design and construction of ultrasonic Doppler transducers for blood flow measurement using Finite Element Analysis I. Sánchez, H. Faustmann, P. Acevedo, M. Fuentes, UNAM/UAS, Mexico-Germany
IBERSENSOR 2008 Preliminary Program: Poster Presentations - TUESDAY, 15:30h – 17:30h Agroindustrial and food industry applications (10) IB08-021 IB08-033 IB08-037 IB08-055 IB08-056 IB08-068 IB08-097 IB08-106 IB08-108 IB08-129
Determination of antioxidant capacity with a simple electrochemical method Y. Wang, C. Blanchard-Calas, B. Liu And J-L. Marty (France) Desarrollo De Inmunosensores Y De Biosensores Enzimáticos Para Aplicaciones Agroalimentarias, … A. Montoya, J. J. Manclús, J, Sáiz, A. Arnau, Y. Jiménez, C. March (Spain) New Electrochemical Magneto Immunosensing And Genosensing Strategies For Food Safety A. Lermo, S. Campoy, J. Barbé, S. Alegret, M.I. Pividori (Spain) Caracterización de la enzima lacasa en biocompositos para la determinación del índice de polifenoles en vino Silvia Gómez, Manel Del Valle, Salvador Alegret, Isabel Pividori (Spain) Quality detection in Indian honey using sensor array Rohini P. Mudhalwadkar, Ashok A. Ghatol (India) Desarrollo de un biosensor electroquímico de lectura directa de hibridaciones de AND J. B. Cotero-Ochoa, A. Cortez-Ibarra, C. A. Sánchez-Martínez, E. Martínez-Guerrero, E. J. Herrera-López, E. Flores-Berrios (Mexico) Water analysis using an electronic tongue system combined with Fuzzy logic G.S. Braga, L.G. Paterno, F.J.Fonseca (Brazil) Application of Electronic Tongue in the analysis of quality of palm Biodiesel Camila Gregorut and Fernando Josepetti Fonseca (Brazil) Desarrollo de un Método Novedoso para Clasificar Aceites de Oliva Mediante una Nariz Electrónica y Vaporización Laser IR C. Rinaldi, S. Reich, A. Lamagna, A. Boselli, N. Boggio, D. Rodríguez, A. Massacane, J. Vorobioff, K. Pierpauli M. L. Azcárate, J. Codnia (Argentina) Detección electroquímica del crecimiento de Escherichia coli en leche cruda con sensores basados en electrodos planos de platino Houari Cobas Gómez, Alian Mesa Gila, Sonnia Pavoni Oliver, Rolando Contreras, Ángela Zayas, Estrella Álvarez (Cuba)Cuba
Nanosensors (7) IB08-007 IB08-008 IB08-045 IB08-058 IB08-075 IB08-119 IB08-145
New strategies for the biofunctionalisation of carbon nanotubes Ana Belén González-Guerrero, Ernest Mendoza, Eva Pellicer and Laura M. Lechuga (Spain) Sensitivity enhancement of MagnetoOptical Surface Plasmon Resonance Biosensor (MOSPR) D. Regatos, A. Calle, D. Fariña, A. Cebollada, G. Armelles, B. Sepúlveda and L. M. Lechuga (Spain) H2 Sensor with nanocrystalline SnO2 and an innovative Heater and Measurement Device L. T. Alaniz, C. L. Arrieta, M. F. Bianchetti, C. A. Gillari, J. F. Giménez, H. A. Lacomi, D. F. Valerio, N. E. Walsöe de Reca (Argentina) Electrochemical Biosensing In Food For Pathogenic Bacteria Based On Magnetic Nanostructured Transducers Susana Liébana, Anabel Lermo, Susana Campoy, Pilar Cortés, Jordi Barbé, Salvador Alegret, Isabel Pividori (Spain) Gas sensors based on multi wall carbon nanotubes decorated with different metal oxides nanoparticles A. Abbaspourrad, C. Veríssimo, R.V. Gelamo, M. M. da Silva, A. R. Vaz, B. S. A. Moshkalev (Brazil) Gas sensor for detection of lower water content in EtOH on nanomaterials of Metalporphyrin-V2O5 deposited on interdigitated Au electrodes Pilar Hidalgo, Henrique E. M. Peres, J. Ramirez-Fernandez, Ronaldo A. Timm, Henrique E. Toma, Koiti Araki (Brazil) Composites based on near-percolation composition: Improvement of the electrochemical response Rosa Olivé-Monllau, Maria Jose Esplandiu, Jordi Bartrolí, Mireia Baeza, and Francisco Céspedes (Spain)
Biological And Biomedical Applications (16) IB08-004 IB08-010 IB08-011 IB08-014 IB08-035 IB08-036 IB08-040 IB08-053 IB08-073 IB08-078 IB08-085 IB08-096 IB08-101 IB08-121 IB08-136 IB08-142
Manipulación De Protozoos Por Ultrasonido Flavio Humberto Fernández Morales, Julio Enrique Duarte (Colombia) CDtrodo de ouro modificado com SAM de 4-(metilmercapto)benzaldeído no desenvolvimento de imunossensor M. V. Foguel, H. Yamanaka, A. V. Benedetti, A. A. P. Ferreira (Brazil) Modificação e caracterização de SPE com SAMs de cistamina e glutaraldeído para imobilização da proteína Tc85 de T. cruzi A. A. P. Ferreira, H. Yamanaka, A. V. Benedetti (Brazil) Development of Polystyrene (PS) micro-spheres for biological sensors applications Elis Moura Stori, Cesar Liberato Petzhold, Eduardo de Oliveira da Silva and Cyro Ketzer Saul (Brazil) Evaluación de actividad de Streptomyces sp. M7 adheridas a un soporte sólido M.L. López Rodriguez, C.E. Giacomelli, C.J. Felice y R. Madrid (Argentina) Campo Acústico De Transductores De Difracción Controlada. Alina Aulet, José Antonio Eiras y Carlos Negreira (Uruguay) Prototipo De Estimulación Eléctrica Para El Tratamiento Neurológico De Un Modelo Animal En Coma J. Alcantara C., Callupe R. (Peru) Amperometric electronic tongue applied to coffee classification. A. Durán, A. Gutés, J. A. Rodríguez, M. del Valle (Cuba) Impedimetric Detection of DNA Hybridization using Carbon Nanotubes as Sensing Platform A. Bonanni, M.J. Esplandiu, S. Alegret, M. del Valle (Spain) Screen-printed electrochemical biosensors based on magnetic core-shell nanoparticles Longinotti, G.; Lloret, P.; Ybarra, G.; Moina, C., Hermida, L., Milano, O.; Roberti, M.; Malatto, L; Fraigi, L (Argentina) Estudio del transporte de masa en medios mesoméricos para su aplicación en la detección electroquímica de moléculas biológicas. Graciela González, Graciela Priano, Mauricio Günther, Fernando Battaglini (Argentina) Genossensor eletroquímico para câncer de próstata baseado em matriz de poli(3-aminofenol) Diego L. Franco, Adriana F. Neves, Luiz R. Goulart Filho, Ana G. Brito-Madurro, João M. Madurro (Brazil) Determination Of Salicylic Acid In Skin Cleansing Products By Fia-Amperometry And Bioluminescence Fabiana S. Felix, Erika Valdman, Ivano G.R. Gutz, Lúcio Angnes (Brazil) Diseño de un sistema de adquisición de datos ultrasónicos orientado a aplicaciones biomédicas D. Santos, R. Lavarello, B. Castañeda (Peru) Recognition of brain activity in EEG Christian Humberto Flores Vega, Haroldo Higuibu, Antônio Carlos Bastos de Godoi, Francisco Javier Ramírez Fernández (Brazil) LTCC microsystem incorporating a microcolumn with immobilized β-galactosidase for enzymatic spectrophotometric assays Vítor Ribeiro, Carmen López, Gregorio Álvaro, Mireia Baeza, Josep López-Santín and Julián Alonso (Spain)
Chemical Sensors (12) IB08-028 IB08-043 IB08-044 IB08-049
Resolution Of Heavy Metal Mixtures From Highly Overlapped Asv Voltammograms Employing A Wavelet Neural Network Juan Manuel Gutiérrez, Laura Moreno-Barón, Francisco Céspedes, Roberto Muñoz, Manel Del Valle (Spain) Cu ions detection in aqueous medium by means of immobilized chitosan on conductive surfaces Odilio B. G. Assis, Valmir L. Silva (Brazil) Electrochemical responses of multilayer proteolytic enzymatic films in the presence of E. coli in aqueous medium Luís C. Morais, Odílio B.G. Assis (Brazil) Construcción Y Evaluación De Un Sensor Químico Con La 1-Benzoil-3,3-Dietiltiourea Y Su Aplicación … Ana R. L. Fraga, Aimee V. Pacheco, Juan J. Chacón, Alicia D. García, Ana M. Plutín Stívens, Marcia B. Sanchéz (Cuba)
Chemical Sensors ctnd. (12) IB08-087 IB08-088 IB08-089 IB08-102 IB08-122 IB08-126 IB08-138 IB08-146
Effect of material morphology on the response of NO2 sensor based on ZnO thin film: experiment and theory R. Ferro, J.A. Rodríguez (Cuba) Simulación eléctrica del comportamiento del ISFET Víctor Prado, Carlos Silva (Perú) Conducting polymers as scent sensors J. P. H. Lima and A. M. de Andrade (Brazil) Caracterização de Pseudoeletrodos de Pt, Ag e Au como Referência na Medição de pH Utilizando ISFETs Robson Scaff, Sebastião Gomes dos Santos Filho e Marcelo Bariatto Andrade Fontes (Brazil) Study of Poly(o-ethoxyaniline)/Poly(2,4 etylenedioxythiophene) thin film as ethanol vapor sensor S. T. R. Ozaki, L. G. Paterno and F. J. Fonseca (Brazil) Desarrollo De Un Microsensor Tipo Chemfet Para La Determinacion De Nitratos En Aguas A. Puente-Santiago, O. Arias-de Fuentes, M. Arada, A. Lastres, E. Valdés y C. Jiménez (Cuba) Voltammetric detection of Cu (II) in soil extract samples using modified ultramicroelectrode arrays Jahir Orozco, César Fernández-Sánchez, Julián Alonso, Eva Arasa, Francisco Valdés and Cecilia Jiménez-Jorquera (Spain) Determinação Da Constante Cinética Da Lectina Km+ Pelo Ligante Peroxidase Por Meio Da Técnica De Microbalança… Pesquero, N.C., Pedroso, M. M., Bueno, P. R., Roque-Barreira, M. C., Faria, R. C. (Brazil)
Environmental Applications (12) IB08-017 IB08-026 IB08-029 IB08-034 IB08-038 IB08-042 IB08-054 IB08-057 IB08-082 IB08-113 IB08-120 IB08-123
Development of a portable water quality analyzer G.Comina, M.Nissfolk, J.L.Solis, (Perú) Desenvolvimento De Sensores De Metais Pesados De Baixo Custo Leandro Rodrigues Dias, Clayton Vieira Sales, Marcelo Bariatto Andrade Fontes (Brazil) Real Time Water Specific Heat Capacity Measurement System for Environmental Applications Sandro Vasconcelos, Cyro Ketzer Saul (Brazil) Desarrollo De Un Pseudo-Electrodo De Referencia De Ag/Agcl Integrado En Un Microsensor De Silicio Fernando Luis de Almeida, Isabel Burdallo, Marcelo Bariatto Andrade Fontes y Cecilia Jimenez (Brazil) Voltammetric detection of Cu (II) in soil extract samples using modified ultramicroelectrode arrays Jahir Orozco, César Fernández-Sánchez, Julián Alonso, Eva Arasa, Francisco Valdés and Cecilia Jiménez-Jorquera (Spain) Microbial-Based Electrochemical Bioassay For Water-Quality Analysis. One Step Towards A Disposable Biosensor System. Bonetto, M.; Weinstock, A.; Fraigi, L.; Sacco, N.; Cortón, E. (Argentina) Relative Humidity Sensor Based on Rough Polysilicon Thin Films and Interdigited Out-of-Plane Electrodes Structure P. Zambrozi Jr. and F. Fruett (Brazil) Inmunoensayos De Residuos Farmacológicos En Muestras Ambientales. Perspectivas En Inmunosensores Electroquímicos S. Fabiano, A. Lermo, S. Hernández, S. Kergaravat, M.-P Marco, R. Galve, S. Alegret, M. I. Pividori (Argentina) Voltammetric screen-printed sensors for lead detection in sea water Gemma Aragay, Anna Puig-Font, Arben Merkoçi (Spain) Nanopowders of tin oxide doped with rare earths for application as gas sensing material for fuel qualification Pilar Hidalgo, Henrique E. M. Peres, F. J. Ramirez-Fernandez (Brazil) Generación de electricidad en una celda de combustible microbiana mediada utilizando microánodos descartables Sacco, Natalia; Bonetto, Maria Celina y Cortón, Eduardo. (Argentina) Instrumentación aplicada al monitoreo de variables climáticas. Jáuregui García José Miguel, González Cervantes Guillermo, Flores García Francisco (Mexico)
IBERSENSOR 2008 Preliminary Program: Poster Presentations - WEDNESDAY Instrumentation, Signal Processing and Communications (21) IB08-006 IB08-050 IB08-052 IB08-064 IB08-067 IB08-069 IB08-070 IB08-071 IB08-072 IB08-081 IB08-095 IB08-100 IB08-103 IB08-105 IB08-111 IB08-114 IB08-117 IB08-124 IB08-132 IB08-137 IB08-139
A biosensing platform based on a bimodal waveguide transducer K. E. Zinoviev, C. Domínguez, and L. M. Lechuga (Spain) Water Waves Measurement Instrument with Conductance Compensation Wagner M. Rossini, Carlos A. Guedes Freire de Souza, Kazuo Nishimoto, Jose Jaime da Cruz & Mário Ricardo Gongora-Rubio (Brazil) Nueva interfaz cuasi-digital para sensor de gas basada en el circuito convertidor generalizado de impedancia. A. Durán, J. Sánchez, E. Navarro, S. Casans, J. A. Rodríguez, D. Ramírez (Cuba) Detecção e Localização de Efeito Corona através de técnicas de Radio Localização. José Kleber da Cunha Pinto, Marcos Aurélio Luqueze (Brazil) Nuevo Sistema Basado En Un Microcontrolador Psoc Para La Caracterizacion De Microsensores A. Blanco-Rodríguez, L. Velazco-Molina, O. Arias-de Fuentes y A. Durán-Carrillo (Cuba_) Red de sensores Inteligente via Ehternet aplicada a la caracterización de sensores ISFET. Silvia Casans, A. Edith Navarro, Diego Ramírez, Jaime Sánchez, Alejandro Durán. (Spain) Instrumento de Medida Inteligente aplicado a la investigación en sensores ISFET. Silvia Casans, A. Edith Navarro, Lamia Bouchou, Diego Ramírez, Jaime Sánchez, Alejandro Durán. (Spain) Multi ISFET-metro Virtual usando PIC y PC Enrique E. Valdés Zaldivar , Marcos Machado Monserrat , Giselle Acosta Cabrera, Carlos Domínguez Horna (Cuba) Método de Linealización dinámica para un acondicionador de temperatura/tiempo utilizando termistores E. Castro Montero, A.L. Salazar Mustelier, D. Ramírez Muñoz , J. Sánchez Moreno (Spain) Uso de Redes Neurais Artificiais na Descoberta de Conhecimento a partir de Dados e Imagens de Sensores Clodis Boscarioli, Leandro Augusto da Silva, Emílio Del Moral Hernandez (Brazil) Evaluation of Gasoline Adulteration Using an Interdigitated Microsensor Lucas Gonçalves Dias Mendonça, Delson Torikai, Nilton Itiro Morimoto,Ricardo Cury Ibrahim (Brazil) Impact of Duplicates in Energy Consumption of Wireless Sensor Networks using the GSP protocol Maria Calle, Joseph Kabara (Colombia) Influência da Autenticação de Dados Sobre o Desempenho de Redes UMTS Marcel Stefan Wagner, Wagner Luiz Zucchi (Brazil) Análisis y diseño de un circuito driver basado en convertidor generalizado de impedancias para un actuador piezoeléctrico D. F. Novoa Díaz, D. Ramírez Muñoz, J. Sánchez Moreno (Spain) Uma Abordagem às Camadas Físicas e de Rede das Bandas ISM 915MHz e 2.4GHz: Um Estudo de Qualidade das normas IEEE 802.15 e IEEE 802.15.4 - Padrão ZigBee …Jorge Rodolfo Beingolea Garay, Sergio Takeo Kofuji (Brazil) Using FPAA's in industrial instrumentation Alberto Delgadillo, Ricardo Pirajan (Colombia) Mejora del Ancho de Banda un Sensor de Corriente eléctrica magnetorresistivo J. Sánchez Moreno , D. Ramírez Muñoz (Spain) System for acquisition and analysis of images for species detection Tello Mijares Santiago, Flores García Francisco. (Mexico) Língua Eletrônica: Uma Aproximação Da Curva De Calibração Utilizando Funções Desvios E Multilayer Perceptrons Itamar M. Barbosa, Emilio del Moral Hernandez , Daniel C. Boluda , Mannel del Vale (Brazil) Antennas Miniaturization Analysis For Applications In Sensors Networks C. M. Costa Jr., G. Fontgall and, M. A. B. de Melo, R. C. S. Freire, T.P. Vuong (Brazil) Electron multiplyong charge couple device system test to Brazilan tunable filter image Julian David Rodriguez Ramirez, Dani Guzman, Claudia Mendes de Oliveira,Francisco Javier Ramirez Fernandez (Brazil)
Materials, fabrication & packaging techniques for Microfluidics (13) IB08-023 IB08-060 IB08-063 IB08-076 IB08-080 IB08-084 IB08-086 IB08-099 IB08-104 IB08-112 IB08-128 IB08-134 IB08-140
Study of RF Magnetron sputtering TiOx and TiOxNy films K.F.Albertin and I.Pereyra (Brazil) Fabricação de eletrodos impressos com tecnologia de filme espesso e caracterização eletetroquímica Antonio Ap. Pupim Ferreira, Hideko Yamanaka, Assis V. Benedetti, Cecílio S. Fugivara, Mário Ricardo Gongora-Rubio (Brazil) Fabrication Of A Sic Piezoresistive Pressure Microsensor M. A. Fraga, M. Massi (Brazil) Microfluidic Systems Fabricated By Room Temperature Direct Bonding Process In 7059 Glass Substrates. J. N. Schianti, M. N. P. Carreño (Brazil) Study Of Arrow Waveguide Fabrication Process For Improving Scattering Losses D. O. Carvalho, S. L. Aristizábal., K. F. Albertin, and M. I. Alayo (Brazil) Mejoras en el proceso de transferencia electrónica en biosensores amperométricos enzimáticos M.L. Cortez, A.L. Cukierman, F. Battaglini (Argentina) Sistema descartable de multielectrodos de oro y su aplicación en ensayos múltiples con detección de la unión antígeno –anticuerpo. Ana Sol Peinetti, Graciela Priano, Graciela A. González y Fernando Battaglini (Argentina) Silicio Poroso racionalmente estructurado. Fabricación, caracterización y funcionalización para aplicaciones en biosensores G.Priano, L.N. Acquaroli, L.C. Lasave, F. Battaglini, R.D. Arce, R.R. Koropecki (Argentina) Custom Packaging Design of Microsystem and Microelectronics Devices Milano, O.; Roberti, M.; Fraigi, L. (Argentina) UV-Ozone treatment on ITO using modified high-pressure mercury vapor lamp for assembly of polymeric devices with RBPV-DODM-PPV E. R. Santos, T. E. Schuler, S. H. Wang, E.; C. Burini Junior,M. A. Yamasoe, F. J. Fonseca, E. A. T. Dirani, A. M. de Andrade (Brazil) Mixing in Microfluidic Channels G. Rehder, A. Lopes and M. N. P. Carreño (Brazil) Utilização De Um Laser De Co2 De Baixo Custo Para Microusinagem De Cerâmicas Verdes Ltcc Marcio Rodrigues da Cunha, Elsa Vásquez-Alvarez, Mário R. Gongora-Rubio (Brazil) Evaluation Of Different Working Electrodes For Voltammetric Lead Detection In LTCC Microsystems Eva Arasa-Puig and Julián Alonso (Spain)
MEMS, Microfluidics and Actuators (12) IB08-003 IB08-032 IB08-039 IB08-047 IB08-051 IB08-059
Sismic parameter evaluation in loaded sand and gravel samples using general purpose piezocrystals Armando Luis Imhof, Angel César Veca (Argentina) Study of Residual stress in PECVD a-SiC:H films for MEMS applications Ary Morales, Gustavo Rehder, Inés Pereyra (Brazil) Evaluación de la tecnología MetalMUMPs para la fabricación de un sensor de flujo de aire. Eduardo Martín Rodríguez, Estrella González Rodríguez (Cuba) Célula de carga com LTCC Renato Shiguemitsu Mori, Mario Ricardo Gongora Rubio (Brazil) Integrated Optical Switch M. Stochero, G. Rehder, M. I. Alayo (Brazil) Sistema de Estabilização de Fluxo usando Capacitor Fluídico Danusa Cristina Martins Bazani, Marcio Rodrigues da Cunha, Cyro Ketzer Saul, Mário Ricardo Gongora-Rubio (Brazil)
MEMS, Microfluidics and Actuators (12) - Cntd IB08-061 IB08-077 IB08-079 IB08-107 IB08-116 IB08-118
Physical and mechanical sensors based on thin-film bulk acoustic wave resonators (FBAR) Humberto Campanella, Josep Montserrat, Arantxa Uranga, Jaume Esteve (Spain) Thermal Behavior of a Heat-actuated Microcantilever M.Narducci, E.Figueras, N.Sabaté, M.Vellvehí, I.García, L.Fonseca, J.Santander and C.Cané (Spain) Electrochemical Detection Nanosystems for Lab-On-A-Chip with Capillary Electrophoresis Adriano Ambrosi, Briza Perez, Arben Merkoçi (Spain) PolyMEMS INAOE, a Surface Micromachining Fabrication Module and the Development of Microstructures for Residual Stress Analysis A. Alanís, D. Díaz, C. Reyes. C. Zúñiga, A. Torres, P. Rosales, J. Molina, J. Hidalga, M. Linares, M. Aceves, and W. Calleja (Mexico) Static Characteristics of Capacitive Displacement Microsensors Erick Araújo dos Santos,Janderson Rocha Rodrigues, Delson Torikai, Ricardo Cury Ibrahim (Brazil) Fabricación De Un Microactuador Electrotérmo-Mecánico Para La Manipulación De Fibras Ópticas J.M. Castelblanco, S. Lopera, J.C. Gaviria, R.A. Betancur (Colombia)
Optical sensors (6) IB08-001 IB08-019 IB08-066 IB08-090 IB08-094 IB08-110
Biosensor Screening Interfaced with Bio-Affinity-Directed Analytical Identification of Bioactive Substances Gerardo R. Marchesini, Dick Hooijerink, Willem Haasnoot, Michel W.F Nielen, (Netherlands) Voltage controlled WDM devices in the visible spectrum: A SPICE simulation M A Vieira, A. Fantoni, M. Vieira, P. Louro, M. Fernandes (Portugal) Silicon Wafer Characterization By Pcd Technique Aiming Optical Sensor Fabrication Based On Photovoltaic Technology N. Stem, C. A. S. Ramos, A. F. Beloto and M. Cid (Brazil) Optoelectronic device Modelling in SPICE T. Barçante Teixeira, T. de Oliveira Rocha and D. W. de Lima Monteiro (Brazil) Porous Silicon Photonic Crystal for Refractometer Sensor Danilo Roque Huanca and Walter Jaimes Salcedo (Brazil) SU8 Arrow Waveguides For Integrated Optical Sensors S. A. Lopera, D. O. Carvalho, R. D. Mansano and M.I. Alayo (Brazil)
IBERSENSOR 2008
6th Iberoamerican Congress on Sensors November, 24-26, 2008, São Paulo, Brasil
IBERSENSOR2008 Organization Chair and Co-Chair Chair: Antonio Carlos Seabra; Universidade de São Paulo, BR Co-Chair: Mario Ricardo Gongora-Rubio; Instituto de Pesquisas Tecnológicas, BR
International Program Committee Carlos Domínguez Horna; CSIC-Centro Nacional de Microlectrónica, ES José Antonio Rodríguez; Universidad de la Habana-Facultad de Física, CU Liliana Fraigi; Instituto Nacional de Tecnología Industrial-CITEI, AR Mario Ricardo Gongora-Rubio; Instituto de Pesquisas Tecnológicas, BR Antonio Carlos Seabra; Universidade de São Paulo, BR Carlos Silva Cárdenas; Pontificia Universidad Católica del Perú, PE Cecilia Jiménez Jorquera; CSIC-Centro Nacional de Microlectrónica, ES Cyro Ketzer Saul; Universidade Federal do Paraná, BR Enrique Ernesto Valdés Zalzibar, Universidad la Habana, CU Francisco Javier Ramírez; Universidade de São Paulo – Escola Politécnica-LME, BR Francisco Valdés; Instituto Tecnológico de la Laguna-DIEE, MX Hector Gomez; Universidad de la República-IFFC, UY José Antonio Plaza Plaza, CSIC-Centro Nacional de Microlectrónica, ES Julián Alonso; Universitat Autònoma de Barcelona -GSB, ES Julio Enrique Duarte; Universidad Pedagógica y Tecnológica de Colombia, CO Manuela Vieira; Instituto Superior de Engenharia de Lisboa-ACEETC, PT Maria Teresa Gomes; Universidade de Aveiro, PT Mariano Aceves; Instituto Nacional de Astrofísica, Óptica y Electrónica, MX Olimpia Arias; Universidad de la Habana, CU Salvador Alegret; Universitat Autònoma de Barcelona, ES
Organizing Committee Armando Antonio Maria Laganá; EPUSP Cyro Ketzer Saúl; UFPR Dione Mari Morita; EPUSP Emilio Del Moral Hernandez; EPUSP Fernando Joseppetti Fonseca; EPUSP Francisco Javier Ramirez Fernandez; EPUSP Marcelo Bariatto Andrade; FATEC-SP Marcelo Paez Carreño; EPUSP Marcos Aparecido Chaves Ferreira; FATEC-SP Nilton Itiro Morimoto; EPUSP Walter Jaimes Salcedo; EPUSP Celina Kikue Massumoto Yunaka; EPUSP Nelson Ordonez; EPUSP Silvia Pereira Bonassa; EPUSP Valeria Gonçalves Minatelli; IPT
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IBERSENSOR 2008
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Photocurrent Chemical Image Gas Sensor as a nose system M. S. Braga, J. S. Gonschorowski, K. R. Maciel de Matos, F. J. Ramirez Fernandez, D. S. Santos, W. Jaimes Salcedo Laboratório de Microeletrônica da Escola Politécnica da USP, Avenida Prof. Luciano Gualberto, travessa 3 nº 380, CEP 05508-900, São Paulo – SP.
[email protected]
Abstract The present work reports the photocurrent response of the MOS sensor to the Hydrogen and ammonia gas moieties. The Au and Pd metals in contact form the gate of the MOS sensor. Depending on the laser excitation regions the photocurrent showed different sensitivity responses to gas exposition that is necessary condition for chemical image gas sensor. The chemical images for hydrogen and ammonia gases, obtained in this work, showed to have different pattern features, which permits the good classification task by using fractal dimension theory. Keywords: Gas sensor, Hydrogen sensor, Ammonia Sensor
Introduction
Experimental procedure.
The chemical image generation is an important issue for modern sensing technologies as electronic noses or tongues [1]. In a semiconductor-insulator system, the depletion layer formed in the semiconductors can be used for measuring the surface potential of insulator and the property of the interface between the semiconductor and the insulator. A number of sensors or measurement systems are based on the variation of the depletion layer [2]. One method to measure the width of the depletion layer is to use ac photocurrent induced by illumination of the modulated light, this method is used for sensor application as for example lightaddressable potentiometric sensor [3], artificial olfactory sensor [4]. The basic device used for the chemical images sensing was a metal-oxidesemiconductor (MOS) structure using different metals (Au, Pt, Al, Pd, etc) as a gate of the device [1].
The sensor devices were fabricated on the Ptype silicon substrate with resistivity of 10-20 Ωcm and (100) orientation. First, the thermal oxide o was grown at 1100 C in O2 environment for 100 minutes in order to obtain the SiO2 film with 100 nm of thickness. After the Al film was deposited by evaporation technique at the backside of wafer for substrate ohmmic contact. The gate electrodes were deposited on the SiO2 film by electron beam technique obtaining the Pt, Au, Pd and Al films of 5, 40, 50 and 300 nm of thickness respectively. It has been studied the response of two different sensors devices. The first one used two different layout for gate of devices, the first one had, the one The schematic representation of the final MOS device is showed in the figure 1.
The present work reports the sensibility of MOS sensor device to hydrogen and ammonia gas moieties by using photocurrent response.The MOS structure had had the Au and Pd metals both in contact as a device gate. The chemical images were analyzed by using
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The gas sensor response measurements were obtained after setting up the device into the chamber with inlet and outlet pipes for gas injection and gas ejection respectively. The sensor was photo excited locally by laser pulse source throughout a glass window and the photocurrents were measured before and after gas injection. The spot of laser light was scanned throughout the surface of the sensor (metals and SiO2 regions) building photocurrent images. It is worth to mention that the scanned area was limited to region where the Au and Pd electrodes showed a contact (figure 2).
figure 3 shows the chemical images response for the H2 and NH3 gases at different concentrations. The images were built out by subtracting the response of the N2 gas (inert gas) from the response images of the H2 and NH3 gases respectively. Additionally, in order to obtain the chemical images feature independent on the gas concentration, the each chemical image was normalized to (0 1) interval for the photocurrent intensity values. The qualitative examination of chemical images response clearly showed the significant difference between chemical images generated by the H2 to NH3 gases.
Au(50nm) Pd(40nm)
SiO2(100nm) p-Si Al(300nm)
Figure 1. Schematic representation of the MOS device used as gas sensor.
Figure 2. The scanned area by pulse laser used in the image building as sensor response.
200 ppm NH3 + N2
200 ppm H2 + N2
300 ppm NH3 + N2
300 ppm H2 + N2
400 ppm NH3 + N2
400 ppm H2 + N2
500 ppm NH3 + N2
500 ppm H2 + N2
Experimental results and discussions The images as response signals of MOS sensor were obtained by photocurrent measurement at every time the spot pulsed laser light is incident on surface of sensor. The spot laser was scanned on the area region containing the two types of gate metals (figure 2). It is important the mention that the experimental o process was carried out at temperature 90 C because the sensibility and response time are optimal at this temperature, i.e., the sensor o operation temperature is 90 C. The photocurrent intensity in the MOS devices depend on the charge depletion region wide at silicon substrate, the wide of charge region can be modulated by an external electric bias and the adsorption of gases at the metal gate; in this work the maximum sensibility of MOS sensor response was obtained for the 0.5 V electric biasing. The
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0
1
Figure 3. The normalized chemical images obtained from the MOS sensor as response to H2 and NH3 exposition into different concentrations.
The chemical images for H2 response showed highest photocurrent intensity in the Pd electrode region than into the Au region (Figure 3). The highest photocurrent in the Pd region happen because the Pd metal is an excellent + catalytic moiety for the H2 cleavage into H ions, these ions were diffused easily to the metal-oxide interface and consequently promote significant change in the depletion layer wide [4]. The chemical images for NH3 response showed less photocurrent intensity contrast from Pd region to Au region even though the Pd region showed the highest photocurrent intensity. The less sensible sensor response to this gas was due to the large reaction path for NH3 decomposition at the Pd metal surface as reported in [5]. The qualitative examination of images showed that the response of sensor was different for each type of gases. In this work it had been proposed a method for quantitative responses comparisons as it will be described follow. First the images were converted to gray scale. The images in gray scale were analyzed by using the fractal geometry theory. The principal parameter of fractal set is related to fractal dimension, which is defined in the sense of Hausdorff measurement [6]. The literature reported several computational algorithms for estimate the fractal dimension of curves or surfaces for example it can be mentioned the epsilon-blanket method, walking-divider, prism counting, box counting and area-perimeter method [7]. The surface images showed to be suitable for use the epsilon-blanket and box counting methods. In the present work the feature images extraction were obtained by using the box-counting method. This method can be explained as follow: first the surface is cover with arbitrary size (r) 3D boxes, after the size of the boxes is decreased consequently increasing de number of boxes in order to assure a total surface covering, this process is repeated iteratively. The fractal dimensions of surfaces are obtained from the slope of graph log-log of the number of boxes versus the size of boxes [7]. Unfortunately, the graph log-log used to determine the fractal dimension is not always a linear relation due to computational approach method used for reconstruction the highly roughened surface. However, in these cases, it is possible to used a multi-scale fractal dimension concept [8] which is obtained by differentiating log-log graph at every point, i.e, it was determined the fractal dimension for each point of the graph. Applying this method the multi-scale fractal dimension of images in the figure 3 was
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obtained (figure 4) .
Figure 4. The Muti-scale fractal dimension corresponding to image response to Hydrogen gas (black) and Ammonia gas (blue) respectively. The vector representation of curves in the figure 4 was achieved by polynomial fitting obtaining the polynomial coefficients that were used as quantitative elements for recognition process. The polynomial coefficients behaviors are showed in the figure 5 for the each type of gases used in the experiment. From the figure 5, it can be possible to see clearly that the MOS sensor classified the hydrogen and ammonia gases because the polynomial coefficients of the multi-scale fractal dimension curves for each gases are very different. These results showed that the method used it this work have had a good capability for patter recognition task in the photocurrent chemical image of MOS gas sensor. These results open the great possibilities to nose system application in this type of sensors
Figure 6. The polynomial coefficients obtained from the multi-scale fractal dimension curves in figure 4.
dimensions. Master’s University, 1982.
Conclusions The photocurrent chemical image MOS sensor showed high sensibility for H2 gas than for NH3 moiety. However the NH3 detection by this sensor is success task because the chemical image concept given many interesting detail for gas response recognition. In this sense the present work was proposed a quantitative method for classification task and patter recognition process The quantitative analyses for gas response classification were achieved after using the fractal geometry theory. This proposed method showed to be an excellent tool for images pattern recognition process for gas sensors used in the present work, resulting in a good classification response of the H2 and NH3 gases. These results open the great possibilities to application this kind of sensor as nose system. Acknowledgments The authors thanks FAPESP and CNPq Project 400619/2004-0 Nano Sensores Integrados e Microsistemas. References [1] J. Mizsei, Thin Solid Films 436, 25-33 (2003). [2] M. Nakao, S. Inoue, T. Yoshinobu, H. Iwasaki, Sensor and Actuators B34, 234-239 (1996). [3] T. Yoshinobu, H. Iwasaki, Y. Ui, K. Furuichi, Y. Ermolenko, Y. Mourzina, T. Wagner, N. Nather, M. J. Shoning, Methods 37, 94-102 (2005). [4] D. Filippini, I. Lundstrom, Sensors and Actuators B-95, 116-122 (2003). [5] I. Lundstron, M. S. Shivaraman, C. A. Svensson, J. Appl. Phys. 46 (9), 3876, 19975. [6] HUREWICZ, W.; WALLMAN, H. Dimension Theory. Princeton University Press, 1941. [7] SHELBERG, M. The development of a curve and surface algorithm to measure fractal
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thesis,
Ohio
State
[8] PELI, T.; TOM, V.; LEE, V. Multi-scale fractal and correlation signatures for image screening and natural clutter suppression. SPIE Visual Communication and Image Processing IV, 1199, pp. 402-415, 1989.
