A novel flexible capacitive touch pad based on graphene oxide film

作者：Tian He; Yang Yi; Xie Dan; Ren Tian Ling^*; Shu Yi; Zhou Chang Jian; Sun Hui; Liu Xuan; Zhang Cang Hai

来源：Nanoscale, 2013, 5(3): 890-894.

DOI：10.1039/c2nr33455k

Recently, graphene oxide (GO) supercapacitors with ultra-high energy densities have received significant attention. In addition to energy storage, GO capacitors might also have broad applications in renewable energy engineering, such as vibration and sound energy harvesting. Here, we experimentally create a macroscopic flexible capacitive touch pad based on GO film. An obvious touch "ON" to "OFF" voltage ratio up to similar to 60 has been observed. Moreover, we tested the capacitor structure on both flat and curved surfaces and it showed high response sensitivity under fast touch rates. Collectively, our results raise the exciting prospect that the realization of macroscopic flexible keyboards with large-area graphene based materials is technologically feasible, which may open up important applications in control and interface design for solar cells, speakers, supercapacitors, batteries and MEMS systems.

• 出版日期2013
• 单位清华大学