Wednesday, 21 May 2014
Self-powered sensor for human-machine interfacing
Researchers have created a thin-film triboelectric sensor which uses a polymer-nanowire-decorated triboelectric-negative polymer surface to achieve ultrasensitive tactile sensing. The device harnessed the triboelectric charges generated in the polymer surface upon contact with a foreign object to generate an output voltage. The sensor retained its functionality even when applied to a curved surface. Demonstrated applications included various alarm systems powered by touch alone. Approach also offers possibilities for electronic-skin-type technologies.
Self-Powered, Ultrasensitive, Flexible Tactile Sensors Based on Contact Electrification; G. Zhu et al, Nano Letters; dx.doi.org/10.1021/nl5005652