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Water Meniscus-Directed Organization of Liquid-Ordered Domains in Lipid Monolayer

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Abstract:

We report on a spatial organization process of liquid-ordered (lo) domains in a lipid monolayer into a two dimensional array on structurally patterned substrates. The curvature of a lipid monolayer which strongly obeys the water meniscus at an air–water interface is manipulated to create two different, curved and flat, zones during the water evaporation in the structural patterns. Due to the high bending rigidity, lo domains are diffused into the flat region to avoid the elastic deformation. The Helfrich-type thermodynamic criterion for coarsening of lo domains was first presented and confirmed through experimental results obtained in various patterns. Our topographic system will be very useful for understanding a fundamental concept as well as a quantitative criterion for curvature-driven organization of lo domains in biological membranes.

Keywords: BENDING RIGIDITY; CURVATURE; LIPID MONOLAYER; LIQUID-ORDERED DOMAIN; MENISCUS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.3644

Publication date: May 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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