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Localized Diffusive Motion on Two Different Time Scales in Solid Alkane Nanoparticles



Siao-Kwan Wang, E. Mamontov, Mengjun Bai, F.Y. Hansen, Haskell Taub, John R. Copley, Victoria Garcia Sakai, Goran Gasparovic, Timothy Jenkins, Madhu Sudan Tyagi, Kenneth W. Herwig, David B. Neumann, Wouter Montfrooij, U.G. Volkmann


High-energy-resolution quasielastic neutron scattering on three complementary spectrometers has been used to investigate molecular diffusive motion in solid nanoparticles of the alkane n-C32H^66^. Nontranslational molecular diffusive motion in the plastic phase occurs on two different timescales: a "fast" motion corresponding to uniaxial rotation about the long molecular axis; and a ¿slow¿ motion attributed to conformational changes of the molecule. Contrary to the conventional interpretation in bulk alkanes, the fast uniaxial rotation begins in the low-temperature crystalline phase.
European Physical Journal-Applied Physics


Wang, S. , Mamontov, E. , Bai, M. , Hansen, F. , Taub, H. , Copley, J. , Sakai, V. , Gasparovic, G. , Jenkins, T. , Tyagi, M. , Herwig, K. , Neumann, D. , Montfrooij, W. and Volkmann, U. (2010), Localized Diffusive Motion on Two Different Time Scales in Solid Alkane Nanoparticles, European Physical Journal-Applied Physics, [online], (Accessed April 16, 2024)
Created October 10, 2010, Updated October 12, 2021