Smectic A liquid single crystal elastomers showing macroscopic in‐plane fluidity
Authors:
- 1 February 1997
- journal article
- research article
- Published by Wiley in Macromolecular Rapid Communications
- Vol. 18 (2) , 65-71
Abstract
The mechanical response of a smectic A liquid single crystal elastomer (LSCE) to stress applied perpendicular and parallel to the layers is described. We find that the static modulus perpendicular to the layers is two orders of magnitude larger than the modulus parallel to the layer direction, where the latter is completely due to the crosslinking. Macroscopically the width of the smectic A LSCE does not shrink when a mechanical stress is applied parallel to the layers while the length of the film increases by a factor of 2 thus demonstrating the in‐plane fluidity of the smectic layering.Keywords
This publication has 15 references indexed in Scilit:
- Director reorientation in nematic-liquid-single-crystal elastomers by external mechanical stressEurophysics Letters, 1996
- Strain‐induced director reorientation in nematic liquid single crystal elastomersMacromolecular Rapid Communications, 1995
- Fluctuations above the Smectic-A-Isotropic Transition in Liquid Crystalline Elastomers under External StressEurophysics Letters, 1995
- Liquid crystal elastomers: Influence of the orientational distribution of the crosslinks on the phase behaviour and reorientation processesMacromolecular Chemistry and Physics, 1994
- Nonvanishing of the layer compressional elastic constant at the smetic-A-to-nematic phase transition: A consequence of Landau-Peierls instability?Physical Review Letters, 1992
- Absolute measurement of the critical behavior of the smectic elastic constant of bilayer and monolayer smectic-liquid crystals on approaching the transition to the nematic phasePhysical Review A, 1984
- Critical behaviour of second sound near the smectic A nematic phase transitionJournal de Physique, 1981
- Mechanical Shear of Layers in Smectic-and Smectic-Liquid CrystalPhysical Review Letters, 1980
- Weak Nematic Gels1980
- Strain-induced instability of monodomain smectic A and cholesteric liquid crystalsApplied Physics Letters, 1973