Study of liquid-glass transition by real time Brillouin scattering
Ko, JH; Takada, N; Ueda, M; Kojima, S
| HERO ID | 4949090 |
|---|---|
| In Press | No |
| Year | 2003 |
| Title | Study of liquid-glass transition by real time Brillouin scattering |
| Authors | Ko, JH; Takada, N; Ueda, M; Kojima, S |
| Journal | Journal of Molecular Structure |
| Volume | 651 |
| Page Numbers | 159-163 |
| Abstract | The real-time Brillouin scattering study using a nonscanning Fabry-Perot interferometer (NSFPI) is reported on the acoustic properties of glass-forming tripropylene glycol monomethyl ether (TPGME). Due to the very short acquisition time of NSFPI, Brillouin spectra of TPGME from liquid to glassy phases have been successfully measured within 4 h, which is much shorter than that of conventional scanning-type Fabry-Perot interferometers. The deviation of the sound velocity from the low-frequency limiting value and the increase of the central peak intensity in addition to the Brillouin linewidth indicate a coupling of some structural relaxation to the acoustic waves. Based on a simple Debye approximation, it was shown that the relaxation process probed by Brillouin scattering obeys the Arrhenius law with an activation energy of about 3.1 kcal/mol and a preexponential factor of 5.9 X 10(-14) s. (C) 2003 Elsevier Science B.V. All rights reserved. |
| Doi | 10.1016/S0022-2860(02)00649-X |
| Wosid | WOS:000183424200019 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | real-time Brillouin scattering; nonscanning Fabry-Perot interferometer; tripropylene glycol monomethyl ether; glass transition |