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Title: Unique Pitch Evolution in the Smectic -C-alpha* Phase

Abstract

Employing resonant x-ray diffraction, we observed unique pitch evolutions in the smectic-C{alpha}* phase in mixtures of two antiferroelectric liquid crystals. Our results show that the pitch in this phase continuously evolves across 4 layers, contradicting a theoretical model that predicts that the smectic-C{sub FI2}* phase intervenes in the smectic-C{alpha}* phase. The phase sequences we found can be explained by another model that includes one type of long-range interaction among smectic layers.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
930521
Report Number(s):
BNL-80520-2008-JA
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US200904%%764
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 99; Journal Issue: 7
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIFERROELECTRIC MATERIALS; INTERACTION RANGE; LIQUID CRYSTALS; MIXTURES; X-RAY DIFFRACTION; national synchrotron light source

Citation Formats

Liu,Z., McCoy, B., Wang, S., Pindak, R., Caliebe, W., Barois, P., Fernandes, P., Nguyen, H., Hsu, C., and Wang, . Unique Pitch Evolution in the Smectic -C-alpha* Phase. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.077802.
Liu,Z., McCoy, B., Wang, S., Pindak, R., Caliebe, W., Barois, P., Fernandes, P., Nguyen, H., Hsu, C., & Wang, . Unique Pitch Evolution in the Smectic -C-alpha* Phase. United States. doi:10.1103/PhysRevLett.99.077802.
Liu,Z., McCoy, B., Wang, S., Pindak, R., Caliebe, W., Barois, P., Fernandes, P., Nguyen, H., Hsu, C., and Wang, . Mon . "Unique Pitch Evolution in the Smectic -C-alpha* Phase". United States. doi:10.1103/PhysRevLett.99.077802.
@article{osti_930521,
title = {Unique Pitch Evolution in the Smectic -C-alpha* Phase},
author = {Liu,Z. and McCoy, B. and Wang, S. and Pindak, R. and Caliebe, W. and Barois, P. and Fernandes, P. and Nguyen, H. and Hsu, C. and Wang, .},
abstractNote = {Employing resonant x-ray diffraction, we observed unique pitch evolutions in the smectic-C{alpha}* phase in mixtures of two antiferroelectric liquid crystals. Our results show that the pitch in this phase continuously evolves across 4 layers, contradicting a theoretical model that predicts that the smectic-C{sub FI2}* phase intervenes in the smectic-C{alpha}* phase. The phase sequences we found can be explained by another model that includes one type of long-range interaction among smectic layers.},
doi = {10.1103/PhysRevLett.99.077802},
journal = {Physical Review Letters},
number = 7,
volume = 99,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}