Data/hora: 22/06/2024 13:28:47

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 06/04/2005
Data da última atualização: | 06/04/2005
Autoria: | LEITE, F. L.; BORATO, C. E.; RIUL JÚNIOR, A.; OLIVEIRA JÚNIOR, O. N.; BERNARDES FILHO, R.; MATTOSO, L. H. C.
Título: | Using force spectroscopy in the characterization of taste sensors from nanostructured films.
Ano de publicação: | 2003
Fonte/Imprenta: | In: FRONTIERS OF NANOENGINEERING, 1. Campinas, SP, out. 2003. Book of extend abstracts.. Campinas : FEEC/UNICAMP, 2003.
Idioma: | Inglês

Conteúdo:

Recent developments in taste sensors have shown that extremely high sensitivity can be achieved if the sensing units are made up with nanostructured organic films deposited onto interdigitated electrodes, and the principie of detection is impedance spectroscopy [I]. In this project we investigate the use of sensor arrays to detect trace amounts of pollutants in waters from different sources. In arder to optimize the performance of sensing units one needs to select appropriate materiais to produce the units, which requires understanding the properties of the films coating the electrodes and their int~raction with the liquido In the project, we employ FfIR and Raman Spectroscopic techniques to study the interaction and force spectroscopy (FS) with an AFM to investigate the forces involving the nanostructured films. 
MateriaIs and Methods: The sensing units are obtained by depositing nanostructured films onto interdigitated gold electrodes, using the Langmuir-Blodgett (LB) and self-assembly techniques. An array normally comprises 4-6 sensing units produced from different materiais, especially conducting polymers. Film morphology and FS measurements are carried out with a Topometrix, Discoverer, model TMX 2010 AFM microscope.

Palavras-Chave: | Espectroscopia de Força; Filmes; Sensor de paladar.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (8811-1) - UPC - SP - -- - PROCI-03.00155 -  - 2003.00155 - DIS