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Science 1 February 2008:
Vol. 319. no. 5863, pp. 577 - 578
DOI: 10.1126/science.1155120
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Perspectives

MATERIALS SCIENCE:
Glass Surfaces Not So

Glassy J. R. Dutcher and M. D. Ediger

Nanoscale indentations on a polymer glass relax rapidly, indicating the presence of a highly mobile liquid surface layer.

J. R. Dutcher is in the Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada. M. D. Ediger is in the Department of Chemistry, University of Wisconsin, Madison, WI 53706, USA. E-mail: ediger{at}chem.wisc.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)