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Jill Gallaher, Katarzyna Wodzinska, Thomas Heimburg, and Martin Bier. 2010. Ion-channel-like behavior in lipid bilayer membranes at the melting transition. Accepted by Phys. Rev. E. abstract74

It is well known that at the gel-liquid phase transition temperature a lipid bilayer membrane exhibits an increased ion permeability. We analyze the quantized currents in which the increased permeability presents itself. The open time histogram shows a "-3/2" power law which implies an open-closed transition rate that decreases like k(t) ∝ t-1 as time evolves. We propose a "pore freezing" model to explain the observations. We discuss how this model also leads to the 1/fα noise that is commonly observed in currents across biological and artitcial membranes.