Steffens Clarice, Brezolin Alexandra Nava, Steffens Juliana
Department of Food Engineering, URI, Campus of Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, RS, Brazil.
Scanning. 2018 Jun 5;2018:4782685. doi: 10.1155/2018/4782685. eCollection 2018.
This paper describes the use of different conducting polymers (polyaniline, poly(-ethoxyaniline), and polypyrrole) as a sensitive layer on a silicon cantilever sensor. The mechanical response (deflection) of the bimaterial (the coated cantilever) was investigated under the influence of relative humidity. The variations in the deflection of the coated cantilevers when exposed to relative humidity were evaluated. The results indicated a linear sensitivity in ranges, where the high value was obtained for a polypyrrole-sensitive layer between 20 and 45% of humidity. Furthermore, the sensor shows excellent performance along with rapid response and recovery times, relatively low hysteresis, and excellent stability. The sensors developed are potentially excellent materials for sensing low humidity for long time.
本文描述了使用不同的导电聚合物（聚苯胺、聚（乙氧基苯胺）和聚吡咯）作为硅悬臂梁传感器上的敏感层。研究了双材料（涂覆的悬臂梁）在相对湿度影响下的机械响应（挠度）。评估了涂覆悬臂梁在暴露于相对湿度时挠度的变化。结果表明在一定范围内具有线性灵敏度，其中聚吡咯敏感层在20%至45%湿度之间获得了较高的值。此外，该传感器表现出优异的性能，响应和恢复时间快，滞后相对较低，稳定性优异。所开发的传感器有可能成为长时间传感低湿度的优异材料。
