writer：Peng Xiao, Y Liang, J He, L Zhang,* S Wang,JC Gu, JW Zhang, YJ Huang, SW Kuo and Tao Chen*
keywords：Janus film, CNTs thin film, PDMS, flexible sensor
source：期刊
specific source：ACS Nano, 2019, 3, 4368?4378
Issue time：2019年

As promising candidates for intelligent biomimetic applications similar to living organisms, smart soft materials, have aroused extensive interests due to their extraordinarily designable structures and functionality. Herein, a bubble-like elastomer-based electronic skin that can be pneumatically actuated is achieved through hydrophilic/hydrophobic interphase mediated asymmetric functionalization. The asymmetric and controllable introduction of elastic polydimethylsiloxane (PDMS) into the carbon nanotubes (CNTs) film at air/water interface can endow the Janus ultrathin film with tunable conductivity, self-adhesivity, self-adaptivity and even self-sealed properties. As a result, the Janus films can be employed as multifunctional electronics, including self-adhesive strain sensing/thermal managing devices and even non-contact mechanical sensors as artificial eardrum for tiny air pressure detection. Significantly, these excellent features can further enable the integration of actuating and sensing functions. As a proof of concept, the Janus film can serve as a self-supported one to simultaneously imitate the controllable contracting/expanding behaviors of the vocal sac of frog and monitor the real-time current change in this process, demonstrating significant potentials in smart bionic applications.