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Characterization of soft stripe-domain deformations in Sm-C and Sm-C* liquid-crystal elastomers

Biggins, J. S. and Bhattacharya, K. (2009) Characterization of soft stripe-domain deformations in Sm-C and Sm-C* liquid-crystal elastomers. Physical Review E, 79 (6). Art. No. 061705. ISSN 1063-651X.

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The neoclassical model of Sm-C (and Sm-C*) elastomers developed by Warner and Adams predicts a class of “soft” (zero energy) deformations. We find and describe the full set of stripe domains—laminate structures in which the laminates alternate between two different deformations—that can form between pairs of these soft deformations. All the stripe domains fall into two classes, one in which the smectic layers are not bent at the interfaces, but for which—in the Sm-C* case—the interfaces are charged, and one in which the smectic layers are bent but the interfaces are never charged. Striped deformations significantly enhance the softness of the macroscopic elastic response.

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Bhattacharya, K.0000-0003-2908-5469
Additional Information:© 2009 American Physical Society. Received 19 December 2008; revised 20 March 2009; published 23 June 2009. We are grateful for many interesting and important discussions with Professor Mark Warner. This work was carried out during various visits by J.S.B. to Caltech and K.B. to Cambridge. We gratefully acknowledge the financial support of the CamSURF program at Caltech, the Powell Foundation, the Sims Fund, and the EPSRC. PACS numbers: 61.30.Vx, 83.80.Va, 62.20.D, 61.41.e
Funding AgencyGrant Number
CamSURF program, CaltechUNSPECIFIED
Powell FoundationUNSPECIFIED
Sims fund, University of CambridgeUNSPECIFIED
Engineering and Physical Sciences Research Council (EPSRC)UNSPECIFIED
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Subject Keywords:deformation, elasticity, elastomers, laminates, liquid crystal polymers, liquid structure, smectic liquid crystals
Issue or Number:6
Record Number:CaltechAUTHORS:20090731-111609650
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14758
Deposited By: Jason Perez
Deposited On:11 Aug 2009 17:51
Last Modified:03 Oct 2019 00:52

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