Abstract
The thermal, optical light absorption and light scattering properties of a liquid crystal can be distinguished and separately studied by a single technique, pulsed photoacoustic spectroscopy (PPAS), by using different excitation/detection configurations. The advantages of performing complementary thermal and optical measurements without modifying the sample environment are demonstrated in the case of a typical liquid crystal: 4-octyl-4′-cyanobiphenyl (8CB). Results show that light scattering can strongly influence the PPAS response signal through the light absorption profile, especially at phase transitions subjected to small changes in thermal properties, such as the Nematic/isotrope phase transition.
| Original language | English |
|---|---|
| Pages (from-to) | 7258-7265 |
| Number of pages | 8 |
| Journal | Journal of Chemical Physics |
| Volume | 108 |
| Issue number | 17 |
| State | Published - May 1 1998 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Influence of thermal and optical properties on the visibility of liquid-crystal phase transitions in photoacoustic spectroscopy. / Puccetti, Germain; Leblanc, Roger.
In: Journal of Chemical Physics, Vol. 108, No. 17, 01.05.1998, p. 7258-7265.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of thermal and optical properties on the visibility of liquid-crystal phase transitions in photoacoustic spectroscopy
AU - Puccetti, Germain
AU - Leblanc, Roger
PY - 1998/5/1
Y1 - 1998/5/1
N2 - The thermal, optical light absorption and light scattering properties of a liquid crystal can be distinguished and separately studied by a single technique, pulsed photoacoustic spectroscopy (PPAS), by using different excitation/detection configurations. The advantages of performing complementary thermal and optical measurements without modifying the sample environment are demonstrated in the case of a typical liquid crystal: 4-octyl-4′-cyanobiphenyl (8CB). Results show that light scattering can strongly influence the PPAS response signal through the light absorption profile, especially at phase transitions subjected to small changes in thermal properties, such as the Nematic/isotrope phase transition.
AB - The thermal, optical light absorption and light scattering properties of a liquid crystal can be distinguished and separately studied by a single technique, pulsed photoacoustic spectroscopy (PPAS), by using different excitation/detection configurations. The advantages of performing complementary thermal and optical measurements without modifying the sample environment are demonstrated in the case of a typical liquid crystal: 4-octyl-4′-cyanobiphenyl (8CB). Results show that light scattering can strongly influence the PPAS response signal through the light absorption profile, especially at phase transitions subjected to small changes in thermal properties, such as the Nematic/isotrope phase transition.
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UR - http://www.scopus.com/inward/citedby.url?scp=0032072061&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032072061
VL - 108
SP - 7258
EP - 7265
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 17
ER -