Nandakumar, P. and Vijayan , C. and Rajalakshmi , M. and Arora , A. K. and Murti , Y. V. G. S. (2001) Raman spectra of CdS nanocrystals in Nafion: longitudinal optical and confined acoustic phonon modes. Physica E: Low-dimensional Systems and Nanostructures, 11 (4). pp. 377-383. ISSN 1386-9477
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Abstract
Quantum confinement effects on the longitudinal optical and acoustic phonons in US nanocrystals in the strongly confined regime in the polymer matrix Nafion are studied using Raman spectroscopy. The LO-phonon modes show size-dependent asymmetric broadening though the broadening and asymmetry are less than those predicted by the phonon confinement models. Two types of confined acoustic modes corresponding to n = 1, l = 0 and n = 1, l = 2 spheroidal vibrations are observed. Softening of the spheroidal modes is observed in the strongly confined regime. (C) 2001 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Nanophysics Physical Science > Nano objects Material Science > Nanochemistry Material Science > Nanostructured materials |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics Faculty of Engineering, Science and Mathematics > School of Chemistry |
| ID Code: | 7096 |
| Deposited By: | JNCASR |
| Deposited On: | 02 Sep 2009 10:27 |
| Last Modified: | 02 Sep 2009 10:27 |
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