| Numéro |
J. Phys. IV France
Volume 10, Numéro PR7, May 2000
International Workshop on Dynamics in Confinement
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|---|---|---|
| Page(s) | Pr7-157 - Pr7-160 | |
| DOI | https://doi.org/10.1051/jp4:2000731 | |
International Workshop on Dynamics in Confinement
J. Phys. IV France 10 (2000) Pr7-157-Pr7-160
DOI: 10.1051/jp4:2000731
1 Argonne National Laboratory, IPNS, Bldg. 360, 9700 S. Cass Avenue, Argonne, IL 60439, U.S.A.
2 National Institute of Standards and Technology, NIST Center for Neutron Research, 100 Bureau Drive - Stop 8562, Gaithersburg, MD, U.S.A.
© EDP Sciences 2000
J. Phys. IV France 10 (2000) Pr7-157-Pr7-160
DOI: 10.1051/jp4:2000731
Dynamics of intermediate-length alkane films absorbed on graphite
K.W. Herwig1, D. Fuhrmann1, L. Criswell1, H. Taub1, F.Y. Hansen1, R. Dimeo2 and D.A. Neumann11 Argonne National Laboratory, IPNS, Bldg. 360, 9700 S. Cass Avenue, Argonne, IL 60439, U.S.A.
2 National Institute of Standards and Technology, NIST Center for Neutron Research, 100 Bureau Drive - Stop 8562, Gaithersburg, MD, U.S.A.
Abstract
The dynamics of flexible chain molecules near a solid interface is of fundamental interest in polymer science. This paper makes a preliminary report on a quasielastic neutron scattering study of the dynamics of monolayer films of C 24H50 adsorbed on graphite. Quasielastic scattering was observed at temperatures as low as ≈ 180K, well below the monolayer melting temperature of 340 K. Preliminary analysis of the data indicates that at 230 K the entire molecule executes a rolling motion about its long axis while the terminal methyl groups exhibit relatively rapid reorientation.
© EDP Sciences 2000