Generation of various wrinkle shapes on single surface by controlling thickness of weakly polymerized layer

Mechanically Tunable Slippery Behavior on Soft Poly(dimethylsiloxane)-Based Anisotropic Wrinkles Infused with Lubricating Fluid

“…Elastic wrinkles with mechanically tunable topography have been shown as one of the best candidates in many applications including tunable adhesion, wetting, microfluidics, microlens array, optical grating, etc. − Such wrinkles depict the above-mentioned tunable properties as their amplitude or height can be reversibly tuned as a function of applied external strain. Fabrication of such wrinkles on elastic substrates has been demonstrated in various ways for different experimental systems. ,− Buckling instability in a bilayer system with elastic modulus mismatch leads to the spontaneous wrinkle formation. ,, The resulting wrinkle can be isotropic or anisotropic depending upon the nature of external strain (one- or two-dimensional). , Cross-linked elastomeric polymer polydimethylsiloxane (PDMS) has commonly been used as thick elastic foundation (substrate) in most of the wrinkle fabrications. Expanding the substrate layer is often achieved by mechanical stretching, heating, swelling, etc.…”