| 초록 |
Surface wrinkling phenomenon, its studies on which date back to Euler, has received much attention because of its significance in thin film science and industry. In this presentation, self-organized wrinkling is suggested which can be dictated by an internal wrinkling wave that selects the type of modes from an externally imposed periodic pattern. An elastomeric patterned PDMS mold is placed on a thin bilayer of metal on polymer and heated, which in turn give rise to a periodic wave of harmonic series. In addition, we report complex pattern formation and shape control in the confinement-induced wrinkling. These complex structures could be inverted in shape by manipulating the work of adhesion at the interface between the mold and the metal surface. The ability to tailor the shape of a surface is expected to have a broad range of applications in electro-optics, microfluidics, and biomolecular patterning. |
