Structure factor of a lamellar smectic phase with inclusions
UNSPECIFIED. (2001) Structure factor of a lamellar smectic phase with inclusions. EUROPEAN PHYSICAL JOURNAL E, 4 (1). pp. 115-120. ISSN 1292-8941Full text not available from this repository.
Motivated by numerous X-ray scattering studies of lamellar phases with membrane proteins, amphiphilic peptides, polymers, or other inclusions, we have determined the modifications of the classical Caille law for a smectic phase as a function of the nature and concentration of inclusions added to it. Besides a fundamental interest on the behavior of fluctuating systems with inclusions, a precise characterization of the action of a given protein on a lipid membrane (anchoring, swelling, stiffening...) is of direct biological interest and could be probed by way of X-ray measurements. As a first step we consider three different couplings involving local pinching (or swelling), stiffening or curvature of the membrane. In the first two cases we predict that independent inclusions induce a simple renormalization of the bending and compression moduli of the smectic phase. The X-ray experiments may also be used to probe correlations between inclusions. Finally we show that asymmetric coupling (such as a local curvature of the membrane) results in a modification of the usual Caille law.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Journal or Publication Title:||EUROPEAN PHYSICAL JOURNAL E|
|Official Date:||January 2001|
|Number of Pages:||6|
|Page Range:||pp. 115-120|
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