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Angular deficits in flat space: Remotely controllable apertures in nematic solid sheets

AuthorsModes, C. D.; Warner, M.; Sánchez-Somolinos, Carlos; Haan, L. T. de; Broer, Dirk, J.
Issue Date2013
PublisherRoyal Society (Great Britain)
CitationProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 469(2153): 20120631 (2013)
AbstractRecent attention has been given to the realization of angular deficits and surpluses in the local ground-state geometry of thin sheets of nematic solids as out-of-plane deformations. Such systems exhibit conical or anti-conical curvature sites, or possibly arrays of such polyhedral corners, in order to satisfy the material's spontaneous strain-generated metric requirements. Here, we turn the angular deficit requirement on its head, and show theoretically and experimentally that by appropriately altering the topology of the initially flat sheet-for example, by cutting it in carefully chosen regions-the same angular deficits and surpluses may manifest simply in-plane by changing the geometry of the cut region. Such amechanism offers a route to apertures or arrays of apertures that may be reversibly opened and closed by applying spontaneous strain with heat, light or chemical potential. Copyright © The Royal Society 2013.
Identifiersdoi: 10.1098/rspa.2012.0631
issn: 1364-5021
e-issn: 1471-2946
Appears in Collections:(ICMA) Artículos
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