Photoacoustic studies on thermal parameters of liquid crystal mixtures

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 - 01-08-2007

Fingerprint

Liquid Crystals
Photoacoustic effect
Liquid crystals
Volume fraction
liquid crystals
Thermal diffusivity
Cholesterol
cholesterol
thermal diffusivity
Thermal energy
thermal energy
Specific heat
Thermal conductivity
Hydrogen bonds
thermal conductivity
specific heat
augmentation
hydrogen
cells
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Atomic and Molecular Physics, and Optics
  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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
George, Sajan D. ; George, Abraham K. ; Radhakrishnan, P. ; Nampoori, V. P N ; Vallabhan, C. P G. / Photoacoustic studies on thermal parameters of liquid crystal mixtures. In: Smart Materials and Structures. 2007 ; Vol. 16, No. 4. pp. 1298-1301.
@article{c9f1480d940f430ea25f6211e159e050,
title = "Photoacoustic studies on thermal parameters of liquid crystal mixtures",
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.",
author = "George, {Sajan D.} and George, {Abraham K.} and P. Radhakrishnan and Nampoori, {V. P N} and Vallabhan, {C. P G}",
year = "2007",
month = "8",
day = "1",
doi = "10.1088/0964-1726/16/4/042",
language = "English",
volume = "16",
pages = "1298--1301",
journal = "Smart Materials and Structures",
issn = "0964-1726",
publisher = "IOP Publishing Ltd.",
number = "4",

}

George, SD, George, AK, Radhakrishnan, P, Nampoori, VPN & Vallabhan, CPG 2007, 'Photoacoustic studies on thermal parameters of liquid crystal mixtures', Smart Materials and Structures, vol. 16, no. 4, 042, pp. 1298-1301. https://doi.org/10.1088/0964-1726/16/4/042

Photoacoustic studies on thermal parameters of liquid crystal mixtures. / George, Sajan D.; George, Abraham K.; Radhakrishnan, P.; Nampoori, V. P N; Vallabhan, C. P G.

In: Smart Materials and Structures, Vol. 16, No. 4, 042, 01.08.2007, p. 1298-1301.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Photoacoustic studies on thermal parameters of liquid crystal mixtures

AU - George, Sajan D.

AU - George, Abraham K.

AU - Radhakrishnan, P.

AU - Nampoori, V. P N

AU - Vallabhan, C. P G

PY - 2007/8/1

Y1 - 2007/8/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=34547411442&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547411442&partnerID=8YFLogxK

U2 - 10.1088/0964-1726/16/4/042

DO - 10.1088/0964-1726/16/4/042

M3 - Article

VL - 16

SP - 1298

EP - 1301

JO - Smart Materials and Structures

JF - Smart Materials and Structures

SN - 0964-1726

IS - 4

M1 - 042

ER -