The smectic order of wrinkles.
The smectic order of wrinkles.
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DOI:
10.1038/ncomms15809
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发表时间:
2017-07-18
影响因子:
16.6
通讯作者:
Katifori E
中科院分区:
文献类型:
--
作者:
Aharoni H;Todorova DV;Albarrán O;Goehring L;Kamien RD;Katifori E
A thin elastic sheet lying on a soft substrate develops wrinkled patterns when subject to an external forcing or as a result of geometric incompatibility. Thin sheet elasticity and substrate response equip such wrinkles with a global preferred wrinkle spacing length and with resistance to wrinkle curvature. These features are responsible for the liquid crystalline smectic-like behaviour of such systems at intermediate length scales. This insight allows better understanding of the wrinkling patterns seen in such systems, with which we explain pattern breaking into domains, the properties of domain walls and wrinkle undulation. We compare our predictions with numerical simulations and with experimental observations. A thin elastic sheet can develop wrinkles which arrange into patterns similar to those characteristic of liquid crystals. Here the authors use this analogy to propose a mapping between the elastic sheet problem and the smectic liquid crystal problem which can enable a better understanding of wrinkling.
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