Biomimetic self-resilience materials design for tactile devices

Biological interconnection between electronic devices and human body is expected to help health monitoring and to improve human activity by sensing biological signals. As one of the candidate materials poly (dimethylsiloxane) (PDMS) sheet was treated by a low pressure radio frequency (RF) plasma after gold palladium DC-sputter deposition. The RF plasma treatment improved the adhesion strength of PDMS sheet which revealed hierarchical surface structure with nanometer particle-like roughening and the wrinkle morphology with a frequency of ten micrometers order.