期刊
EUROPEAN POLYMER JOURNAL
卷 40, 期 5, 页码 981-986出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2004.01.043
关键词
polymers; topography
The thermal stability of a model system consisting of a polymer film on a Si substrate capped by a thin metal layer has been investigated. When the model system is heated to a sufficiently high temperature characteristic surface wrinkling structures are formed with well defined periodicity over large areas. It is suggested that this wave-like surface morphology is driven by the thermal expansion coefficient mismatch of the different layers. A mechanism based on bending of a thin stiff surface on a thin elastic medium has been adopted to predict the pattern periodicity which gives satisfactory results with the experimental values. (C) 2004 Elsevier Ltd. All rights reserved.
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