Photoacoustic studies on thermal parameters of liquid crystal mixtures

Sajan D. George, A. K. George, P. Radhakrishnan, V. P N Nampoori, C. P G Vallabhan

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Abstract

Complete thermal characterization of liquid crystal mixtures in the smectic phase consisting of various relative volume fractions of cholesterol and 1-hexadecanol have been carried out using the photoacoustic technique. Thermal diffusivity values of these liquid crystal mixtures are evaluated using the open cell photoacoustic technique whereas the thermal effusivity value is measured using the conventional photoacoustic technique. From the measured values of these transient thermophysical parameters, the thermal conductivity and heat capacity of the sample under investigation are calculated. Analyses of the results show that all the thermophysical parameters depend strongly on the volume fraction of the constituents. Results are interpreted in terms of enhanced hydrogen bonding and the consequent enhancement in cohesive thermal energy transport with increasing volume fraction of 1-hexadecanol.

Original languageEnglish
Article number042
Pages (from-to)1298-1301
Number of pages4
JournalSmart Materials and Structures
Volume16
Issue number4
DOIs
Publication statusPublished - Aug 1 2007

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

George, S. D., George, A. K., Radhakrishnan, P., Nampoori, V. P. N., & Vallabhan, C. P. G. (2007). Photoacoustic studies on thermal parameters of liquid crystal mixtures. Smart Materials and Structures, 16(4), 1298-1301. [042]. https://doi.org/10.1088/0964-1726/16/4/042