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  Rate memory of structural relaxation in glasses and its detection by multidimensional NMR

Heuer, A., Wilhelm, M., Zimmermann, H., & Spiess, H. W. (1995). Rate memory of structural relaxation in glasses and its detection by multidimensional NMR. Physical Review Letters, 75(15), 2851-2854. doi:10.1103/PhysRevLett.75.2851.

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Genre: Journal Article
Alternative Title : Rate memory of structural relaxation in glasses and its detection by multidimensional NMR

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PhysRevLett_75_1995_2851.pdf (Any fulltext), 703KB
 
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 Creators:
Heuer, Andreas1, Author           
Wilhelm, M., Author
Zimmermann, Herbert2, 3, Author           
Spiess, Hans W.2, Author           
Affiliations:
1Research Group Prof. Dr. Haeberlen, Max Planck Institute for Medical Research, Max Planck Society, ou_1497739              
2Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              
3Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: A new aspect of the nature of the relaxation rate distribution of α relaxation in glasses is analyzed for the example of a polymer: How long does a polymer segment remember its relaxation rate? For a two-state system we describe the rate memory in terms of a single dimensionless parameter. Applying the theory to multidimensional NMR exchange experiments, the rate memory of a polymer slightly above its glass transition temperature is determined. The rate memory is near its theoretical minimum, indicating strong coupling of the individual relaxation modes.

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Language(s): eng - English
 Dates: 1995-06-051995-10-09
 Publication Status: Published in print
 Pages: 4
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 Rev. Type: Peer
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 75 (15) Sequence Number: - Start / End Page: 2851 - 2854 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1