| 초록 |
The wrinkled surfacetopographies generated in nature for surviving and thriving have been widelystudied. To mimic this morphology, non-lithographic wrinkling instability hasbeen established well, however, the wrinkling approaches typically are irreversible.Here, we demonstrate a facile approach to createreversible and localized actuating surface topography on the polymeric bilayer(PDMS substrate and PAN top layer) with liquid metal fillers by multiplethermal triggers, i.e., heating, light, and electrical current. The PDMS substrate with LMF dispersed can enhancethermal conductivity resulting in remote actuating wrinkles by exposing it toIR. The microchannel of PDMS filled with LM can locally actuate hierarchicaltopographies by applying electrical current through the LM wire. This approachto reversible wrinkling may find use in fabricating functional surfaces withtunable wettability, optical properties, and adhesion. |
