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

doi:10.1063/1.124856

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

Brown University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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 language	English
Pages (from-to)	1872-1874
Number of pages	3
Journal	Applied Physics Letters
Volume	75
Issue number	13
DOIs	https://doi.org/10.1063/1.124856
State	Published - 27 Sep 1999
Externally published	Yes

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title = "Amplified stain-rate dependence of deformation in polymer-dispersed liquid-crystal materials",

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.",

author = "Cairns, \{Darran R.\} and Genin, \{Guy M.\} and Wagoner, \{Amy J.\} and Briant, \{Clyde L.\} and Crawford, \{Gregory P.\}",

year = "1999",

month = sep,

day = "27",

doi = "10.1063/1.124856",

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volume = "75",

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journal = "Applied Physics Letters",

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T1 - Amplified stain-rate dependence of deformation in polymer-dispersed liquid-crystal materials

AU - Cairns, Darran R.

AU - Genin, Guy M.

AU - Wagoner, Amy J.

AU - Briant, Clyde L.

AU - Crawford, Gregory P.

PY - 1999/9/27

Y1 - 1999/9/27

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0001323532

U2 - 10.1063/1.124856

DO - 10.1063/1.124856

M3 - 文章

AN - SCOPUS:0001323532

SN - 0003-6951

VL - 75

SP - 1872

EP - 1874

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

ER -

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

Abstract

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