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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(07) [July 2006] >
| Title: | Temperature dependent optical property studies of nematic mixtures |
| Authors: | Soorya, T N
Gupta, Surabhi
Kumar, Anant
Jain, Sachin
Arora, V P |
| Keywords: | Birefringence
Order parameter
Polarizability
Liquid crystals
Nematic mixtures |
| Issue Date: | Jul-2006 |
| Publisher: | CSIR |
| IPC Code: | G02F1/13 |
| Abstract: | The refractive
indices ne and no, of two nematic mixtures:
ZLI 2141-000 and ZLI 2452 have been measured in the temperature range 291-391 K
using 589 nm light source. A slight modification to the four-parameter model
given in Li J et al.,
J Appl Phys, 96 (2004) 19, is made to
carry out the analysis of the data. The temperature dependence of refractive
indices and the birefringence agree closely with that obtained using
four-parameter model. Different parameters have been compared. The value of
parameter β is larger for ZLI 2452 than for ZLI 2141-000, which may be due to
the presence of BCH in place of CB component in the latter. A linear relation
is observed between birefringence (Δn)
and the order parameter (S). The
normalized polarizabilities:  e/ < >, o /<
> and the order parameter S agree
fairly well with those obtained using modified model. |
| Page(s): | 524-531 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(07) [July 2006]
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