An interdigital electrode type sensor based on P(VDF-TrFE) nanofibers.

Organic piezoelectric materials exhibit excellent physical properties and potential applications in implantable biological devices. As a result flexible nanoscale piezoelectric sensors based on these materials have been the focus of numerous investigations. Different strategies have been developed as promising approaches to obtain high properties flexible nano devices. Nevertheless, the piezoelectric performance of the materials could not be fully utilized, which in turn leads to a decrease in the sensitivity of the device. Here, the highly efficient utilization of flexible nanoscale piezoelectric sensor is realized through the ingenious design of the interdigital electrode structure. The high flexibility is attributed to the organic materials of P(VDF-TrFE). The output performance of the sensor made by the nanofibers has been greatly improved, since each segment of the nanofibers on the interdigital electrode structure is utilized efficiently. The results show that a maximum voltage of 140 mV and a current of about 0.59 nA for the sensor are generated. The volume power density of the nano device based on P(VDF-TrFE) nanofibers is 5.01 nW cm−3. This proposed method could be a promising strategy to fabricate future nanoscale piezoelectric sensors. • The P(VDF-TrFE) nanofibers with good surface morphology are obtained by controlling feeding rate of the precursor solution. • A flexible interdigital structure type nano sensor based on P(VDF-TrFE) nanofibers are fabricated. • The piezoelectricity of P(VDF-TrFE) can be effectively utilized by using the interdigital structure type nano sensor. • The delivered power of the sensor can be up to 507 nW with a load resistance of 100 ΩM. [ABSTRACT FROM AUTHOR]