Chiral phase-coexistence in compressed double-twist elastomers

Matthew P. Leighton, Laurent Kreplak, Andrew D. Rutenberg

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1 Cita (Scopus)

Resumen

We adapt the theory of anisotropic rubber elasticity to model cross-linked double-twist liquid crystal cylinders such as exhibited in biological systems. In mechanical extension we recover strain-straightening, but with an exact expression in the small twist-angle limit. In compression, we observe coexistence between high and low twist phases. Coexistence begins at small compressive strains and is robustly observed for any anisotropic cross-links and for general double-twist functions-but disappears at large twist angles. Within the coexistence region, significant compression of double-twist cylinders is allowed at constant stress. Our results are qualitatively consistent with previous observations of swollen or compressed collagen fibrils, indicating that this phenomenon may be readily accessible experimentally.

Idioma originalEnglish
Páginas (desde-hasta)5018-5024
Número de páginas7
PublicaciónSoft Matter
Volumen17
N.º19
DOI
EstadoPublished - may. 21 2021

Nota bibliográfica

Funding Information:
We thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for operating Grants RGPIN-2018-03781 (LK) and RGPIN-2019-05888 (ADR). MPL thanks NSERC for summer fellowship support (USRA-552365-2020), and a CGS Masters fellowship.

Publisher Copyright:
© 2021 The Royal Society of Chemistry.

ASJC Scopus Subject Areas

  • General Chemistry
  • Condensed Matter Physics

PubMed: MeSH publication types

  • Journal Article

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