Orientation of Liquid-Crystals Under Mechanical Force

7 Orientation of Liquid Crystals Under Mechanical Forces 

Apart from the orientation mechanisms discussed in the previous sections, a preferential alignment of liquid crystals or liquid-crystalline polymers may also be induced by the application of mechanical forces. Depending on the investigated system, this can be either done by shearing between plates or in stress-strain mea- 

2 Segmental Mobility of Liquid Crystals and Liquid-Crystalline Polymers 

FigiiFe 2-37. Thermal erasure of a laser-induced alignment in a PIOa 12 polyester demonstrated by the disappearance of the v(C=N) dichroism at the isotropization point (68 °C) (a) and the effect of irradiation, thermal erasure and reirradiation on the i (CsN) dichroism of the same polymer (b). 

1 Shear-Induced Orientation in Side-Chain Liquid-Crystalline Copolysiloxanes 

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Orientation of Liquid Crystals Under Mechanical Forces 69 a b... 

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