Mecke K (2001)
Publication Status: Published
Publication Type: Journal article
Publication year: 2001
Publisher: EDP SCIENCES S A
Book Volume: 53
Pages Range: 100-106
Journal Issue: 1
A highly hydrated lipid bilayer, floating a few A above another one adsorbed on a smooth solid substrate, was prepared at room temperature where lipids (DSPC) are in gel phase, then heated at several temperatures including the pretransitional temperature T-p and the chain melting temperature T-m. A precise in situ characterization by neutron reflectivity led to two new results. First, even when in fluid phase the floating bilayer was structured and stable; it thus provides a flexible model system for physical and biophysical studies of membranes. Second, at intermediate temperatures, a spectacular maximum in both inter-bilayer distance and bilayer roughness was simultaneously observed. It might be a, direct observation of the balance between energy minimization and entropic repulsion, leading to an estimation of the dimensionless parameter (k(B)T)(2)/A(kappa), where A is the Hamacker constant; and kappa the bending modulus.
APA:
Mecke, K. (2001). A fluid floating bilayer. EPL - Europhysics Letters, 53(1), 100-106.
MLA:
Mecke, Klaus. "A fluid floating bilayer." EPL - Europhysics Letters 53.1 (2001): 100-106.
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