Volume 71, Number 2, July 2005
|Page(s)||311 - 317|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||15 June 2005|
Lipid membranes on a surface grating studied by neutron reflectometry
Institut fuer Roentgenphysik - Friedrich-Hund-Platz 1, 37077 Goettingen, Germany
Accepted: 23 May 2005
This experiment presents a new approach to measure elasticity parameters of lipid bilayers. We have deposited a stack of phospholipid bilayers on a silicon surface grating defined by e-beam lithography. The periodic surface profile acts as a boundary condition which imposes a controlled strain in the smectic film. Probing this distortion field by neutron reflectometry, we determine the smectic penetration length from the relative intensity of the satellite peaks.
PACS: 87.16.Dg – Membranes, bilayers, and vesicles / 61.12.Ha – Neutron reflectometry / 62.20.Dc – Elasticity, elastic constants
© EDP Sciences, 2005
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