Optical investigations on the biaxial smectic-A phase of a bent-core compound

S. T. Wang, X. F. Han, A. Cady, Z. Q. Liu, A. Kamenev, L. Glazman, B. K. Sadashiva, R. Amaranatha Reddy, C. C. Huang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A null transmission ellipsometry study on free standing films of a band-core compound was reported. The critical exponent associated with the biaxiality through the uniaxial-antiferoelectric biaxial Sm A transition was measured to be 0.82±0.04. It was demonstrated that the critical behavior of the optical biaxiality with the order parameter being a vector was described by the secondary-order parameter of the three-dimensional XY model. A remarkable even-odd layering effect exhibited by the surface layers of freestanding films under an applied electric field in the film plane was also observed.

Original languageEnglish (US)
Article number061705
Pages (from-to)061705-1-061705-6
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number6 1
StatePublished - Dec 2004

Bibliographical note

Funding Information:
We are grateful to Professor H. R. Brand and Professor A. Aharony for valuable discussions. The research was supported in part by the National Science Foundation, Solid State Chemistry Program under Grants No. DMR-0106122, No. DMR02-37296, and No. EIA02-10736. X.F.H. wishes to acknowledge financial support from the Stanwood Johnston Memorial Foundation at the University of Minnesota.


Dive into the research topics of 'Optical investigations on the biaxial smectic-A phase of a bent-core compound'. Together they form a unique fingerprint.

Cite this