Experimental determination of the entropic potential between supported fluctuating lipid bilayers

Details Experimental determination of the entropic potential between supported fluctuating lipid bilayers Experimental determination of the entropic potential between supported fluctuating lipid bilayers

2010-10-29

arxiv.org/abs/1010.6235v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

The interaction potential between supported floating bilayers has been determined by grazing incidence specular and off-specular scattering using synchrotron radiation. Our measurements demonstrate that floating bilayers are significantly more hydrated than the usually studied multilayers, therefore giving access to more intrinsic properties of the membranes. At equilibrium, the interaction potential can be two orders of magnitude softer than previously reported, which can be explained by the weak electrostatic interaction due to the small fraction (sigma ~ 0.001 e$^-$/nm$^2$) of ionized lipids in the bilayers. Our data are sensitive enough to discriminate between different functional forms of the entropic repulsion proposed in the literature, and the ``soft'' potential of R. Podgornik and V. Parsegian, Langmuir 8, 557 (1992) is shown to most appropriately describe our data.

Affiliated with

Also associated with

No associations

Rating

Experimental determination of the entropic potential between supported fluctuating lipid bilayers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Experimental determination of the entropic potential between supported fluctuating lipid bilayers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Experimental determination of the entropic potential between supported fluctuating lipid bilayers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-616001