Ultrafast Dynamic Piezoresistive Response of Graphene-Based Cellular Elastomers
Ling Qiu, M Bulut Coskun, Yue Tang, Jefferson Z Liu, Tuncay Alan, Jie Ding, Truong Van-Tan, Dan Li
ADVANCED MATERIALS | WILEY-V C H VERLAG GMBH | Published : 2016
Ultralight graphene-based cellular elastomers are found to exhibit nearly frequency-independent piezoresistive behaviors. Surpassing the mechanoreceptors in the human skin, these graphene elastomers can provide an instantaneous and high-fidelity electrical response to dynamic pressures ranging from quasi-static up to 2000 Hz, and are capable of detecting ultralow pressures as small as 0.082 Pa.
The authors acknowledge the financial support from the Australian Research Council and Monash University Interdisciplinary Resaerch (IDR) program. This work made use of the facilities at the Monash Centre for Electron Microscopy. The authors are grateful for helpful discussion with G. P. Simon, W. Y. Yan, and S. V. Petersen. The authors thank A. Neild for providing the electromagnetic shaker, M. Yuce and M. S. Arefin for the help with the high-frequency dynamic test, and S. L. Y. Chang for TEM imaging.