Microcantilever Sensors Coated with a Sensitive Polyaniline Layer for Detecting Volatile Organic Compounds

Autor(es)

Steffens, C. ^{[1, 2]} ; Leite, F. L. ^[3] ; Manzoli, A. ^[1] ; Sandoval, R. D. ^{[1, 2]} ; Fatibello, O. ^{[2, 4]} ; Herrmann, P. S. P. ^{[1, 2, 5]}

Afiliação do(s) autor(es)

^[1] Embrapa Instrumentat, Natl Nanotechnol Lab Agribusiness, BR-13560970 Sao Carlos, SP - Brazil

^[2] Fed Univ Sao Carlos UFSCar, Dept Biotechnol, BR-13560000 Sao Carlos, SP - Brazil

^[3] Fed Univ Sao Carlos UFSCar, Nanoneurobiophys Res Grp, Dept Phys Math & Chem DFMQ, BR-18052780 Sorocaba, SP - Brazil

^[4] Fed Univ Sao Carlos UFSCar, Dept Chem, BR-13560000 Sao Carlos, SP - Brazil

^[5] Forschungszentrum Julich, Embrapa Labex Europe, Inst Biogeosci 2, D-52428 Julich, Nwf - Germany

• Tipo de documento: Artigo Científico
• Fonte: Journal of Nanoscience and Nanotechnology; v. 14, n. 9, p. 6718-6722, SEP 2014.
• Citações Web of Science: 7

Resumo

This paper describes a silicon cantilever sensor coated with a conducting polymer layer. The mechanical response (deflection) of the bimaterial (the coated microcantilever) was investigated under the influence of several volatile compounds methanol, ethanol, acetone, propanol, dichloroethane, toluene and benzene. The variations in the deflection of the coated and uncoated microcantilevers when exposed to volatile organic compounds were evaluated, and the results indicated that the highest sensitivity was obtained with the coated microcantilever and methanol. The uncoated nnicrocantilever was not sensitive to the volatile organic compounds. An increase in the concentration of the volatile organic compound resulted in higher deflections of the microcantilever sensor. The sensor responses were reversible, sensible, rapid and proportional to the volatile concentration. (AU)

• Processo FAPESP: 09/08244-0 - Desenvolvimento de microcantilever funcionalizado com polímeros condutores para a detecção de vapores químicos
• Beneficiário: Clarice Steffens
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 07/05089-9 - Desenvolvimento de nanobiossensores usando a espectroscopia de força atômica: aplicação na detecção de pesticidas
• Beneficiário: Fabio de Lima Leite
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores