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Comparative study of the NMR length scale of dynamic heterogeneities of three different glass formers

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48034

Heuer,  Andreas
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47797

Doliwa,  B.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48786

Spiess,  Hans Wolfgang
MPI for Polymer Research, Max Planck Society;

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Citation

Reinsberg, S. A., Heuer, A., Doliwa, B., Zimmermann, H., & Spiess, H. W. (2002). Comparative study of the NMR length scale of dynamic heterogeneities of three different glass formers. Journal of Non-Crystalline Solids, 307, 208-214.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-650B-A
Abstract
This article presents a comparison of the determination of the length scale of dynamic heterogeneities in different glass formers by means of a multidimensional C-13 solid-state exchange NMR experiment. So far, results for poly(vinyl acetate) and glycerol have been reported. The existing data together with new results for o-terphenyl have been reanalysed in a slightly revised procedure. This revision is rationalised by computer experiments which are performed on hard-sphere systems in analogy to the NMR experiment. While we find domains in the region of 2-4 nm for PVAc and o-terphenyl, glycerol has a smaller domain of approximate to1 nm. (C) 2002 Elsevier Science B.V. All rights reserved.