The off-plane dynamics in the frequency window from 1 THz (4 meV) to 3 THz (12 meV) in multiple phospholipid bilayers as studied by means of neutron scattering is presented. A weak inelastic signal is observed, indicating that off-plane dynamics is dominated by the disordered inter-layer water. A collective mode is detected which shows a low-momentum dispersion similar to that of bulk water, while a more complex dynamics is found on increasing the momentum transfer.

Transverse THz dynamics of phospholipid membranes: A neutron scattering study

Conti Nibali, Valeria;D'Angelo, Giovanna;De Francesco, Alessio;Petrillo, Caterina;Paciaroni, Alessandro;Sacchetti, Francesco
2020

Abstract

The off-plane dynamics in the frequency window from 1 THz (4 meV) to 3 THz (12 meV) in multiple phospholipid bilayers as studied by means of neutron scattering is presented. A weak inelastic signal is observed, indicating that off-plane dynamics is dominated by the disordered inter-layer water. A collective mode is detected which shows a low-momentum dispersion similar to that of bulk water, while a more complex dynamics is found on increasing the momentum transfer.
2020
Istituto Officina dei Materiali - IOM -
phospolipid bilayers, collective dynamics, neutron scattering, phonons
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/531440
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