TY - JOUR
T1 - Nanoscale surface relaxation of a membrane stack
AU - Bary-Soroker, Hamutal
AU - Diamant, Haim
PY - 2007/10/11
Y1 - 2007/10/11
N2 - Recent measurements of the short-wavelength (∼1-100 nm) fluctuations in stacks of lipid membranes have revealed two distinct relaxations: a fast one (decay rate of ∼0.1 ns-1), which fits the known baroclinic mode of bulk lamellar phases, and a slower one (∼1-10 μ s-1) of unknown origin. We show that the latter is accounted for by an overdamped capillary mode, depending on the surface tension of the stack and its anisotropic viscosity. We thereby demonstrate how the dynamic surface tension of membrane stacks could be extracted from such measurements.
AB - Recent measurements of the short-wavelength (∼1-100 nm) fluctuations in stacks of lipid membranes have revealed two distinct relaxations: a fast one (decay rate of ∼0.1 ns-1), which fits the known baroclinic mode of bulk lamellar phases, and a slower one (∼1-10 μ s-1) of unknown origin. We show that the latter is accounted for by an overdamped capillary mode, depending on the surface tension of the stack and its anisotropic viscosity. We thereby demonstrate how the dynamic surface tension of membrane stacks could be extracted from such measurements.
UR - http://www.scopus.com/inward/record.url?scp=35248817420&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.76.042401
DO - 10.1103/PhysRevE.76.042401
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AN - SCOPUS:35248817420
SN - 1539-3755
VL - 76
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 4
M1 - 042401
ER -