This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
NG Working . Working priciple of nanogenerator where the force is exerted in perpendicular to the growing direction of nanowire Zhong Lin Wang and Jinhui Song Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays Science selfmade Nanogenerators
Page 2023 Free-images.com. All images are Public Domain