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Time evolution of cholesteric fingers of the second species in an electric field
Author(s) -
Pirkl S.
Publication year - 2009
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200900490
Subject(s) - electric field , liquid crystal , voltage , optics , field (mathematics) , line (geometry) , optically active , materials science , condensed matter physics , chemical physics , chemistry , physics , geometry , mathematics , organic chemistry , pure mathematics , quantum mechanics
Different growth modes of isolated cholesteric fingers of the second species (CF‐2) in an electric field at voltages near a coexistence line ( V 2 ) between cholesteric and nematic mesophases are in detail described. Videomicroscopy and computer image analysis were used for investigation of the pattern in polarized light. It is shown how a drift, a lengthening and a shape of fingers depend on the voltage at which the growth sets in and three typical scenarios are distinguished. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)