[La spectroscopie de neutrons à haute résolution—un outil pour l'étude de la dynamique des polymères et de la matière molle]
La diffusion de neutrons, avec la capacité de varier le contraste des molécules par l'échange hydrogène/deutérium, est un outil précieux pour l'étude de la matière molle. En plus de l'information structurale obtenue à des échelles microscopiques par les méthodes de diffraction comme la diffusion de neutrons aux petits angles, la dynamique lente des molécules est accessible par la spectroscopie de neutrons à haute résolution sur les mêmes échelles spatiales. Les principes de bases de la spectroscopie à rétro-diffusion, ainsi que la spectroscopie par écho de spin de neutrons, sont présentés dans cet article. L'apport de ces techniques est illustré par des exemples allant de la dynamique des fondus de polymère à celle des biomolécules.
Neutron scattering, with the ability to vary the contrast of molecular items by hydrogen/deuterium exchanges, is an invaluable tool for soft matter research. Besides the structural information on the mesoscopic scale that is obtained by diffraction methods like small angle neutron scattering, the slow dynamics of molecular motion on mesoscopic scale is accessible by high resolution neutron spectroscopy. The basic features of neutron backscattering spectroscopy, and in particular neutron spin-echo spectroscopy, are presented, in combination with illustrations of results from polymer melt dynamics to protein dynamics which are obtained by these techniques.
Mot clés : Matière molle, NSE, Spectroscopie haute résolution
@article{CRPHYS_2007__8_7-8_845_0,
author = {Michael Monkenbusch and Dieter Richter},
title = {High resolution neutron spectroscopy{\textemdash}a tool for the investigation of dynamics of polymers and soft matter},
journal = {Comptes Rendus. Physique},
pages = {845--864},
publisher = {Elsevier},
volume = {8},
number = {7-8},
year = {2007},
doi = {10.1016/j.crhy.2007.10.001},
language = {en},
}
TY - JOUR AU - Michael Monkenbusch AU - Dieter Richter TI - High resolution neutron spectroscopy—a tool for the investigation of dynamics of polymers and soft matter JO - Comptes Rendus. Physique PY - 2007 SP - 845 EP - 864 VL - 8 IS - 7-8 PB - Elsevier DO - 10.1016/j.crhy.2007.10.001 LA - en ID - CRPHYS_2007__8_7-8_845_0 ER -
%0 Journal Article %A Michael Monkenbusch %A Dieter Richter %T High resolution neutron spectroscopy—a tool for the investigation of dynamics of polymers and soft matter %J Comptes Rendus. Physique %D 2007 %P 845-864 %V 8 %N 7-8 %I Elsevier %R 10.1016/j.crhy.2007.10.001 %G en %F CRPHYS_2007__8_7-8_845_0
Michael Monkenbusch; Dieter Richter. High resolution neutron spectroscopy—a tool for the investigation of dynamics of polymers and soft matter. Comptes Rendus. Physique, Volume 8 (2007) no. 7-8, pp. 845-864. doi : 10.1016/j.crhy.2007.10.001. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.10.001/
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