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http://hdl.handle.net/2289/4174
Title: | Splay-bend elasticity and rotational viscosity of liquid crystal mixtures of rod-like and bent-core molecules |
Authors: | Sathyanarayana, P. Sadashiva, B.K. Dhara, Surajit |
Keywords: | Shaped molecules Nematic phase |
Issue Date: | 2011 |
Publisher: | Royal Society of Chemistry |
Citation: | Soft Matter, 2011, Vol.7, p8556 |
Abstract: | We report temperature dependent measurements of birefringence (Delta n), splay (K(11)), bend (K(33)) elastic constants and rotational viscosity (gamma(1)) of mixtures of rod-like and bent-core molecules. K(11) and Delta n remain almost constant for all the mixtures whereas K(33) is always lower than K(11) and further decreases with increasing concentration of bent-core molecules in the mixtures. Apart from the large jump in Delta n at the nematic-isotropic transition (NI) a significant jump in Delta n at the nematic-smectic transition (NS) is also observed that increases with increasing mol% of the bent-core compound in the mixtures. Rotational viscosity increases by a factor of four when the concentration of the bent-core compound increased from 0 to 10 mol%. The results are discussed on the basis of their structural similarity and mutual alignment in the nematic phase. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/4174 |
ISSN: | 1744-683X 1744-6848 (Online) |
Alternative Location: | http://dx.doi.org/10.1039/c1sm05751k |
Copyright: | 2011 Royal Society of Chemistry |
Appears in Collections: | Research Papers (SCM) |
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File | Description | Size | Format | |
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2011_Soft Matter_V7_p8556.pdf Restricted Access | Restricted access | 411.6 kB | Adobe PDF | View/Open Request a copy |
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