Amplified stain-rate dependence of deformation in polymer-dispersed liquid-crystal materials

Darran R. Cairns, Guy M. Genin, Amy J. Wagoner, Clyde L. Briant, Gregory P. Crawford

Research output: Contribution to journalArticlepeer-review

Abstract

The mechanical properties of polymer-dispersed liquid crystals (PDLCs) are investigated to elucidate their fundamental microstructural and mechanistic underpinnings, and overall structural integrity under deformation. High strain-rate loading experiments and quasistatic compression tests on PDLC materials reveal an amplified strain-rate dependence relative to the matrix material. A finite-element micromechanical model of PDLC materials explains this behavior in terms of strain-rate concentrations at the equators of the spherical liquid-crystal droplets. The model also predicts a weak dependence of the aspect ratio of deforming liquid-crystal droplets on their volume fraction.

Original languageEnglish (US)
Pages (from-to)1872-1874
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number13
DOIs
StatePublished - Sep 27 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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