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This chapter reviews a novel technology that uses piezoelectric nanowires to harvest nanoscale mechanical energy. Wurtzite ZnO nanowires were first applied for this purpose. Due to the bending of nanowires, the piezoelectric effect induces positive and negative potentials on the stretched surface and compressed surface, respectively. This effect has been proved by using a conductive AFM tip to deflect...
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...
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