Abstract
High-energy-resolution quasielastic neutron scattering has been used to elucidate the diffusion of water molecules in proximity to single bilayer lipid membranes supported on a silicon substrate. By varying sample temperature, level of hydration, and deuteration, we identify three different types of diffusive water motion: bulk-like, confined, and bound. The motion of bulk-like and confined water molecules is fast compared to those bound to the lipid head groups (7-10 H2O molecules per lipid), which move on the same nanosecond time scale as H atoms within the lipid molecules. Copyright (C) EPLA, 2012
Original language | English |
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Journal | EPL |
Volume | 98 |
Issue number | 4 |
Pages (from-to) | - |
ISSN | 0295-5075 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- PHYSICS,
- DEUTERON MAGNETIC-RESONANCE
- MOLECULAR-DYNAMICS
- HYDRATION