PATTERN-FORMATION AT THE TRAVELING LIQUID-CRYSTAL TWIST-GRAIN-BOUNDARY-SMECTIC-A INTERFACE

Authors
CLADIS PE SLANEY AJ GOODBY JW BRAND HR
Citation
Pe. Cladis et al., PATTERN-FORMATION AT THE TRAVELING LIQUID-CRYSTAL TWIST-GRAIN-BOUNDARY-SMECTIC-A INTERFACE, Physical review letters, 72(2), 1994, pp. 226-229
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
2
Year of publication
1994
Pages
226 - 229
Database
ISI
SICI code
0031-9007(1994)72:2<226:PATTLT>2.0.ZU;2-S
Abstract
The different patterns observed at a twist-grain-boundary- (TGB(A-)) s mectic-A (A) interface moving in a temperature gradient are quantified by measuring interface arclength scaling between two lengths characte rizing these patterns. The ragged melting TGB(A)-A interface results f rom the growth of TGB(A) filaments into oriented A. We attribute the d estruction of TGB(A) when A grows into TGB(A) to the second-order natu re of the TGB(A)-cholesteric transition. These results are interpreted within a defect lattice model.