Liquid single crystal elastomer LSCE

Static mechanical properties in the vicinity of the nematic-isotropic transition in liquid single crystal elastomers (LSCEs) have been investigated [10, 11]. In Fig. 5 the deformation L/Lq (mon) is plotted as a function of the reduced temperature red- Here Lo(mon) denotes the length of the LSCE at the phase transition temperature of the nematic-isotropic phase transition and... 

Liquid Single Crystal Elastomer (LSCE), Anisotropic Network, and Gels... 

Liquid single crystal elastomers (LSCEs) are characterized by a high macroscopically uniform orientation in the liquid-crystalline phase without the require-... 

Kim ST, Finkelmann H (2001) Cholesteric liquid single-crystal elastomers (LSCE) obtained by the anisotropic deswelling method. Macromol Rapid Commun 22 429-433... 

Cross-linked liquid crystalline polymers with the optical axis being macroscopically and uniformly aligned are called liquid single crystalline elastomers (LSCE). Without an external field cross-linking of linear liquid crystalline polymers result in macroscopically non-ordered polydomain samples with an isotropic director orientation. The networks behave like crystal powder with respect to their optical properties. Applying a uniaxial strain to the polydomain network causes a reorientation process and the director of liquid crystalline elastomers becomes macroscopically aligned by the mechanical deformation. The samples become optically transparent (Figure 9.7). This process, however, does not lead to a permanent orientation of the director. 

LSCE liquid single crystal elastomer MAD molding area diagram... 

Fig. 18.3 Thermo- (a) and photo-mechanical (b) effect in LSCEs. Representative opto-mechanical experiment (c) in nematic liquid single crystal elastomers increase of the internal stress generated in the network upon irradiation with UV light (c, left) and decrease of the stress with the time in the dark at a constant temperature, T (c, right)...

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