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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905290
(Accessed October 11, 2025)
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Localized Diffusive Motion on Two Different Time Scales in Solid Alkane Nanoparticles
Published
Author(s)
Siao-Kwan Wang, E. Mamontov, Mengjun Bai, F.Y. Hansen, Haskell Taub, , Victoria Garcia Sakai, Goran Gasparovic, , , Kenneth W. Herwig, David B. Neumann, Wouter Montfrooij, U.G. Volkmann
Abstract
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.Citation
European Physical Journal-Applied Physics
Volume
91
Pub Type
Journals
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Created October 10, 2010, Updated October 12, 2021