The glass transition beyond the time trap: Opto-acoustic dispersion
| Autor: | K.-P. Bohn, Jan-Kristian Krüger, Mami Matsukawa |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Brillouin Spectroscopy
Spin glass Condensed matter physics Chemistry business.industry Relaxation (NMR) Condensed Matter::Disordered Systems and Neural Networks Acoustic dispersion Optics Dispersion relation Thermal Dispersion (optics) General Materials Science Glass transition business Instrumentation |
| Zdroj: | Phase Transitions. 65:279-289 |
| ISSN: | 1029-0338 0141-1594 |
| DOI: | 10.1080/01411599808209291 |
| Popis: | High-resolution Brillouin spectroscopy has been used as a crucial experimental technique to investigate the nature of the thermal glass transition in an epoxy. In order to study the coupling between the α-relaxation process and the thermal glass transition around the quasi-static glass transition temperature T g we introduce the opto-acoustic dispersion function as a very sensitive measure of the α-relaxations and show that close to but above T g the related relaxation spectrum still contains components within the microwave frequency region which finally is truncated by the thermal glass transition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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