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Perfect homeotropic alignment of smectic liquid crystals is demonstrated using an amorphous perfluoropolymer as an alignment layer (see figure). The hydrophobic surface of the perfluoropolymer allows rapid recovery to the homeotropic orientation from the damaged layer structure caused by mechanical shock— for example pressing with tweezers— or crystallization.
On p. 34, Hideo Takezoe and co‐workers demonstrate shock‐free homeotropic alignment of smectic liquid crystals onto the amorphous perfluoropolymer. The hydrophobic surface of perfluoropolymer as an alignment layer enables spontaneous recovery to the original vertical orientations from deformed smectic layers caused by mechanical shock, such as pressing with tweezers or crystallization.
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