Metastability in pixelation patterns of coexisting fluid lipid bilayer phases imposed by e-beam patterned substrates.

ABSTRACT: We study the dynamic evolution of pixilation patterns of the liquid-ordered (L_o) phase in coexistence with the liquid-disordered phase in lipid multibilayers. The pixilation patterns were formed by imposing lattice patterns of localized high curvature on phase-separating multibilayers using curvature-patterned regions of an underlying support. The projected radius of underlying hemisphere-like features, that provided the local curvature, was varied from 60 nm to 100 nm and the square lattice spacing between the features was varied between 200 nm and 400 nm using standard electron (e) -beam lithography. Over time, the area fraction of the L_o phase on the patterned regions of the substrate decreased toward zero at room temperature. This apparent metastability of the pat

SUBMITTER: Ogunyankin MO 

PROVIDER: S-EPMC3592984 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature