"Output of an ultrasonic wave-driven nanogenerator in a confined tube" by Xudong Wang, Yifan Gao et al.

Article Title

Output of an ultrasonic wave-driven nanogenerator in a confined tube

Authors

Xudong Wang, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA Department of Materials Science and Engineering, University of Wisconsin at Madison, Madison, Wisconsin 53706, USA
Yifan Gao, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
Yaguang Wei, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
Zhong Lin Wang, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA

Keywords

Nanogenerator, ultrasonic wave, ZnO, nanowire

Abstract

The output of an ultrasonic wave-driven nanogenerator (NG) has been found to depend on the excitation conditions and geometry. Incidence angle tests indicate that the effective area of an NG determines the amount of power that can be generated. The output power of an NG is also directly related to its distance from the ultrasonic source. A sinusoidal profile of the electrical output was observed when an NG was moved inside a long tube ? lled with water with the ultrasonic source located at one end. This is due to the oscillation of the wave intensity inside the tube as a function of the distance from the excitation source.