This title appears in the Scientific Report :
2000
Inelastic neutron scattering experiments on the fast dynamics of a glass forming liquid in mesoscopic confinements
Inelastic neutron scattering experiments on the fast dynamics of a glass forming liquid in mesoscopic confinements
In this article we report inelastic neutron scattering experiments on the dynamics of a confined glass forming liquid. The study was performed by the time-of-flight technique allowing access to an energy range 0.1-40 meV corresponding Co the fast microscopic dynamics (0.1-20 ps). The most prominent...
Saved in:
Personal Name(s): | Zorn, R. |
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Richter, D. / Hartmann, L. / Kremer, F. / Frick, K. H. | |
Contributing Institute: |
Institut für Festkörperforschung; IFF |
Published in: | Journal de physique / 4, 10 (2000) S. Pr.7-83 - Pr.7.86 |
Imprint: |
Les Ulis
EDP Sciences
2000
|
Physical Description: |
Pr.7-83 - Pr.7.86 |
Document Type: |
Journal Article |
Research Program: |
Kooperative Phänomene in kondensierter Materie |
Series Title: |
Journal de Physique IV
10 |
Subject (ZB): | |
Publikationsportal JuSER |
In this article we report inelastic neutron scattering experiments on the dynamics of a confined glass forming liquid. The study was performed by the time-of-flight technique allowing access to an energy range 0.1-40 meV corresponding Co the fast microscopic dynamics (0.1-20 ps). The most prominent effect was found for the "boson peak" close to 1 meV in the vibrational spectrum. A strong reduction of the modes at lowest frequencies could be observed. This result can be qualitatively explained by a cut-off of long wavelength soundlike modes but yet defies a quantitative description. In contrast to this the "fast process"-a short-time phenomenon of glass forming liquids at t < 1.5 ps-seems not to depend very strongly on the confinement. This result is in agreement with ideas of the local character of this process. |