Super-Flexible Nanogenerator for Energy Harvesting from Gentle Wind and as an Active Deformation Sensor

摘要

Using an Al-foil of thickness -18 μm as a substrate and electrode, a piezoelectric nanogenerator (NC) that is super-flexible in responding to the wavy motion of a very light wind is fabricated using ZnO nanowire arrays. The NC is used to harvest the energy from a waving flag, demonstrating its high flexibility and excellent conformability to be integrated into fabric. The NC is applied to detect the wrinkling of a human face, showing its capability to serve as an active deformation sensor that needs no extra power supply. This strategy may provide a highly promising platform as energy harvesting devices and self-powered sensors for practical use wherever movement is available.