Temperature difference between bulk and surface transition in freely suspended smectic films

Authors
Schlauf, D Bahr, C Glogarova, M Kaspar, M Hamplova, V
Citation
D. Schlauf et al., Temperature difference between bulk and surface transition in freely suspended smectic films, PHYS REV E, 59(5), 1999, pp. 6188-6191
Citations number
43
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
59
Issue
5
Year of publication
1999
Part
B
Pages
6188 - 6191
Database
ISI
SICI code
1063-651X(199905)59:5<6188:TDBBAS>2.0.ZU;2-5
Abstract
We report an ellipsometric study of freely suspended films of a chiral liqu id-crystal compounded possessing the phase sequence smectic-C-smectic-A-iso tropic with a very broad.(67 K) smectic-A phase range. We observe a smectic -C-smectic-A surface transition which is, situated more than 60 K above the bulk smectic-C-smectic-A transition temperature. Possible reasons for this unusually large temperature shift are are discussed. [S1063-651X(99)06405- 3].