| 초록 |
In recent decades, people in different fields attach great importance to mechanical instabilities in soft materials, specifically buckling, owing to their simplicity, low cost, and applicability to arbitrary surface morphologies. Here we will demonstrate a wet release-induced strategy to fabricate symmetric buckles with precisely-controllable pattern dimensions and orientations. The wet release-induced method is based on the release from polymeric sacrificial layers in solutions and crosslinking contraction of the elastomer substrates. Crosslinking contraction leads to the development and stabilization of surface buckling morphology, and a polymeric sacrificial layer provides a mild and simultaneous release process to form orientated wrinkles. Stable wrinkles fabricated from various materials including metals, ceramics, and carbons can be achieved. Those new approaches should give rise to an easy yet competitive way for fabrication of cost-effective, mold-free, large-area, and well-ordered buckled surface through the wet release-induced buckle formation process for broad use in practical applications, such as dry adhesives, antifouling coatings, superhydrophobic layers, and cell alignment. |
