Biosensores à base de óxidos metálicos transparentes: transistores de efeito de campo (FETs) e nanofios

• DOI: 10.22533/at.ed.30919160421

• Palavras-chave: Biosensores, Bioprocessos, Transistores, Nanofios

• Keywords: Biosensors, Bioprocess, Transistors, Nanowires

• Abstract:

  Self-sufficiency in food production

  in Brazil was only achieved in the 1970s, thanks

  to high public investment in research and

  development, rural extension and credit facility.

  It was during this period that the state company,

  EMBRAPA, it was created to foster development

  in the countryside. Much of this growth was in the

  use of technologies that optimized agricultural

  production. One of the current bottlenecks is in

  Meio Ambiente, Sustentabilidade e Agroecologia 4 Capítulo 21 198

  the automation of production processes, bioprocesses. Monitoring of bioprocesses will

  be of great importance for the production of agricultural inputs, such as fertilizers. In this

  context, this work presents a bibliographic review of the use of field effect transistors,

  FET, based on conductive oxides and devices that use nanowires as electrodes. In the

  first case we will see that FETs have great potential because they are multiparametric,

  that is, there are different ways of quantizing the process, just look at the parameter

  that best represents the sensing. On the other hand, nanowire-based devices have

  only conductivity as a parameter, however, the large surface-volume ratio makes these

  highly sensitive with relative gains over thousands of times. Finally, we present some

  unpublished results showing the behavior of the biosensors mentioned previously.

• Número de páginas: 15