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http://hdl.handle.net/2289/5979| Title: | Effect of smectic short-range order on the discontinuous anchoring transition in nematic liquid crystals |
| Authors: | Sai, Venkata D. Kumar, Arun T. Haase, W. Roy, Arun Dhara, Surajit |
| Issue Date: | 28-Jul-2014 |
| Publisher: | American Institute of Physics |
| Citation: | Journal of Chemical Physics, 2014, Vol.141, p 044706 |
| Abstract: | We report studies on the temperature dependent alignment behavior of a homologous series of trans, trans- 4, 4′-dialkyl-(1α,1′ α-bicyclohexyl)-4β-carbonitrile (CCNs) on a perfluoropolymer coated cells. Among six compounds in the series, one (CCN-35) has only nematic phase and the remaining five have either smectic-A or smectic-B in addition to the nematic phase. We simultaneously performed temperature dependent dielectric measurements and optical polarising microscope observation. It is found that except for CCN-35 and CCN-73, the remaining four compounds exhibit discontinuous anchoring transition from planar to homeotropic and vice versa with increasing thermal hysteresis. We developed a simple theory taking into account the effect of smectic short-range order at the substrates to explain the experimental observations. |
| Description: | Open Access |
| URI: | http://hdl.handle.net/2289/5979 |
| ISSN: | 0021-9606 1089-7690 (Online) |
| Alternative Location: | http://dx.doi.org/10.1063/1.4890532 |
| Copyright: | 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2014_JCPhy_141_044706.pdf | Open Access | 631.15 kB | Adobe PDF | View/Open |
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