کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1451399 | 988772 | 2005 | 6 صفحه PDF | دانلود رایگان |
A binary monolayer on an elastic substrate may separate into two phases, which self-assemble into ordered nanoscale patterns. We apply an elastic field to the substrate to guide the self-assembly process. The effect of arbitrary three-dimensional external loading is found to be characterized by a single two-dimensional parameter – a surface stain field of the substrate. A non-uniform strain field significantly influences the size, shape and orientation of self-assembled features, and may induce the formation of pattern colonies. It is shown that a pattern orientates normal to the strain gradient direction. An applied load anchors the position of a self-assembled pattern relative to the substrate, where a colony boundary resides on the strain gradient region. The work suggests a method of strain field design to make various monolayer patterns for nanofabrication.
Journal: Acta Materialia - Volume 53, Issue 13, August 2005, Pages 3689–3694