Length Scale of Dynamic Heterogeneities at the Glass Transition Determined by Multidimensional Nuclear Magnetic Resonance

by: U Tracht, M Wilhelm, A Heuer, H Feng, K Schmidt-Rohr, HW Spiess

Physical Review Letters, Vol. 81, No. 13. (1998), 2727.

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We directly measure the equilibrium length scale of dynamic heterogeneities close to the glass transition by means of a new multidimensional NMR experiment. The spatial information is gained from a proton spin diffusion experiment combined with two 2D 13 C exchange sequences via appropriate back and forth transfer of magnetization between 13 C and 1 H spins. For poly(vinyl acetate) at 10 K above the glass transition we detected a length scale of 3±1 nm.

@article{citeulike:1304855, abstract = {We directly measure the equilibrium length scale of dynamic heterogeneities close to the glass transition by means of a new multidimensional NMR experiment. The spatial information is gained from a proton spin diffusion experiment combined with two 2D 13 C exchange sequences via appropriate back and forth transfer of magnetization between 13 C and 1 H spins. For poly(vinyl acetate) at 10 K above the glass transition we detected a length scale of 3±1 nm.}, author = {Tracht, U. and Wilhelm, M. and Heuer, A. and Feng, H. and Schmidt-Rohr, K. and Spiess, H. W. }, citeulike-article-id = {1304855}, doi = {10.1103/PhysRevLett.81.2727}, journal = {Physical Review Letters}, keywords = {experiment, heterogeneity, mnmr}, number = {13}, pages = {2727+}, posted-at = {2008-03-01 23:31:20}, priority = {2}, publisher = {American Physical Society}, title = {Length Scale of Dynamic Heterogeneities at the Glass Transition Determined by Multidimensional Nuclear Magnetic Resonance}, url = {http://dx.doi.org/10.1103/PhysRevLett.81.2727}, volume = {81}, year = {1998} }

RIS record

TY - JOUR ID - citeulike:1304855 L3 - citeulike-article-id:1304855 TI - Length Scale of Dynamic Heterogeneities at the Glass Transition Determined by Multidimensional Nuclear Magnetic Resonance JF - Physical Review Letters VL - 81 IS - 13 SP - 2727 PB - American Physical Society N2 - We directly measure the equilibrium length scale of dynamic heterogeneities close to the glass transition by means of a new multidimensional NMR experiment. The spatial information is gained from a proton spin diffusion experiment combined with two 2D 13 C exchange sequences via appropriate back and forth transfer of magnetization between 13 C and 1 H spins. For poly(vinyl acetate) at 10 K above the glass transition we detected a length scale of 3±1 nm. KW - experiment KW - heterogeneity KW - mnmr AU - Tracht, U AU - Wilhelm, M AU - Heuer, A AU - Feng, H AU - Schmidt-Rohr, K AU - Spiess, HW PY - 1998//28/ UR - http://dx.doi.org/10.1103/PhysRevLett.81.2727 ER -

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