Formation of regular nanoscale undulations on a thin polymer film imprinted by a soft mold |
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| Authors: | Suh Kahp Y Seo Soon Min Yoo Pil J Lee Hong H |
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| Affiliation: | School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea. sky4u@snu.ac.kr |
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| Abstract: | We observed the formation of regular nanoscale undulations on a polystyrene film when imprinted by a soft poly(dimethylsiloxane) mold above the polymer's glass transition temperature. The shape of the wave was reminiscent of a buckling wave frequently observed for a metal film supported on an elastomeric substrate. We derived a simple theoretical model based on an anisotropic buckling of the polymer film rigidly bound to a substrate, which agrees well with the experiment. |
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