Evaluation of non-linear Effects in Piezoresistive PDMS/MWCNT Sensing Elements

In this study, the non-linear effects of piezoresistive PDMS/MWCNT sensing element were evaluated. Thesensing element is a sandwich-structured film containing an ultrathin layer of piezoresistive nanocomposite and is atype of conductive polymer nanocomposite (CPNCs). In order to manufacturing sensing element, first, a CNTsuspension was prepared and then the piezoresistive film was made using vacuum filtration method. Finally, non-lineareffects of the piezoresistive sensing element such as voltage drop, which is mainly due to creep and hysteresis, wereevaluated and the results were discussed.