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http://hdl.handle.net/2289/2711| Title: | Twist viscoelastic coefficient of novel thiol terminated alkoxy-cyanobiphenyl nematic liquid crystals |
| Authors: | Agarwal, Amit K. Suresh, K.A. Pal, Santanu Kumar Kumar, Sandeep |
| Issue Date: | 28-Apr-2007 |
| Publisher: | American Institute of Physics |
| Citation: | Journal of Chemical Physics, 2007, Vol.126, p164901 |
| Abstract: | We report our studies on the refractive indices and twist viscoelastic coefficient of novel thiol terminated alkoxy-cyanobiphenyl nematic liquid crystals. Dynamic light scattering (DLS) was employed to measure the twist viscoelastic coefficient as a function of temperature and the length of alkoxy chain. Our studies show that the twist viscoelastic coefficient is about three times smaller than that of the ordinary alkoxy-cyanobiphenyl nematic liquid crystals. DLS experiments carried out on this system with applied electric field show that the director relaxation frequency increases. These measurements yield the ratio of dielectric anisotropy to twist viscosity. We have also estimated the activation energy corresponding to twist viscosity. |
| Description: | Open Access. |
| URI: | http://hdl.handle.net/2289/2711 |
| ISSN: | 0021-9606 1089-7690 (Online) |
| Alternative Location: | http://dx.doi.org/10.1063/1.2723741 |
| Copyright: | 2007 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 | |
|---|---|---|---|---|
| 2007 JCP V126 p164901.pdf Restricted Access | Open Access | 93.05 kB | Adobe PDF | View/Open Request a copy |
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