Zhejiang University

Jiwei Zhang

He Zhang

Zhicheng Zhang

Liwei Quan

Huagang Wang

Shurong Dong

Jikui Luo

Provided is a rhomboid structured triboelectric nanogenerator based on a built-in U-shaped support. The device includes a diamond-shaped bracket and two U-shaped supports. The U-shaped supports is connected with the diamond-shaped bracket through four connecting rods, and the supporting plates of U-shaped supports are sequentially adhered with metal conductor layer and a dielectric material layer, which forms the power generation unit. When the diamond-shaped bracket is closed, the dielectric material layers on the two supporting plates come into contact to produce friction charge; and then subjected to the reverse force after compression of the spring, the two dielectric material layers are separated, so as to generate an induction electric field by the friction charge and form a potential difference. Compared with an existing vibration energy harvester, the advantages will be small space occupation, a long service life, simple fabrication, and a high energy conversion rate.

Rhomboid structured triboelectric nanogenerator based on built-in U-shaped support

The present disclosure provides an electrostatic self-powered strain grid sensor configured to measure strain of a component to be measured. The sensor includes a slide groove and a slide sheet. The slide groove is fixed to a fixing end and a sensor array is arranged at an inside bottom of the slide groove. The slide sheet is fixedly connected with the component to be measured and a lower end part of the slide sheet is in contact with the inside bottom of the slide groove. An electric signal is output when the slide sheet sweeps over the sensor array. Based on the output current of a sensor unit of the sensor array indicated by the signal, the number of segments swept over by the slide sheet and a distance swept over the sensor units in a single sensor array by the slide sheet is obtained, thereby acquiring a structural strain.

Electrostatic self-powered strain grid sensor

Growing community of inventors

Hangzhou, China

Jiwei Zhang