title: Non-Gaussian fluctuations resulting from power-law trapping in a lipid bilayer.
abstract: Anomalous diffusion in lipid bilayers is usually attributed to viscoelastic behavior. We compute the scaling exponent of relative fluctuations of the time-averaged mean square displacement in a lipid bilayer, by using a molecular dynamics simulation. According to the continuous time random walk theory, this exponent indicates non-Gaussian behavior caused by a power-law trapping time. Our results provide the first evidence that a lipid bilayer has not only viscoelastic properties but also trapping times distributed according to a power law.
authors: Department of Mechanical Engineering, Keio University, Yokohama, 223-8522, Japan. akimoto@z8.keio.jp
authors: Takuma
authors: T
authors: Akimoto
authors: Eiji
authors: E
authors: Yamamoto
authors: Kenji
authors: K
authors: Yasuoka
authors: Yoshinori
authors: Y
authors: Hirano
authors: Masato
authors: M
authors: Yasui
mesh_terms: D004058:Diffusion; D008051:Lipid Bilayers; D056004:Molecular Dynamics Simulation; D009068:Movement; D013269:Stochastic Processes; D013997:Time Factors
chemical_list: D008051:Lipid Bilayers