Anomalous Viscoelastic Response of Nematic Elastomers
- 30 April 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (18) , 4044-4047
- https://doi.org/10.1103/physrevlett.86.4044
Abstract
We report a combined theoretical and experimental study of linear viscoelastic response in oriented monodomain nematic elastomers. The model predicts a dramatic decrease in the dynamic modulus in certain deformation geometries in an elastic medium with an independently mobile internal degree of freedom, the nematic director with its own relaxation dynamics. Dynamic mechanical measurements on monodomain nematic elastomers confirm our predictions of dependence on shear geometry and on nematic order, and also show a very substantial mechanical loss clearly associated with director relaxation.Keywords
This publication has 13 references indexed in Scilit:
- Untwisting of a Cholesteric Elastomer by a Mechanical FieldPhysical Review Letters, 2000
- Dynamics of soft and semisoft nematic elastomersPhysical Review E, 1999
- New elastic behaviour arising from the unusual constitutive relation of nematic solidsJournal of the Mechanics and Physics of Solids, 1999
- Liquid-crystalline elastomersJournal of Physics: Condensed Matter, 1999
- Slow Stress Relaxation in Randomly Disordered Nematic Elastomers and GelsPhysical Review Letters, 1998
- Mechanical Behavior of Side-Chain Liquid Crystalline NetworksJournal de Physique II, 1996
- Nematic elastomers—A new state of matter?Progress in Polymer Science, 1996
- Rotational invariance and Goldstone modes in nematic elastomers and gelsJournal de Physique II, 1994
- Nematic liquid single crystal elastomersDie Makromolekulare Chemie, Rapid Communications, 1991
- Theory of Elasticity: Vol. 7 of Course of Theoretical PhysicsPhysics Today, 1960