Matches in SemOpenAlex for { <https://semopenalex.org/work/W2951582263> ?p ?o ?g. }
- W2951582263 abstract "Lateral diffusion of molecules on surfaces plays a very important role in various biological processes, including lipid transport across the cell membrane, synaptic transmission and other phenomena such as exo- and endocytosis, signal transduction, chemotaxis and cell growth. In many cases, the surfaces can possess spatial inhomogeneities and/or be rapidly changing shape. Using a generalisation of the model for a thermally excited Helfrich elastic membrane, we consider the problem of lateral diffusion on quasi-planar surfaces, possessing both spatial and temporal fluctuations. Using results from homogenisation theory, we show that, under the assumption of scale separation between the characteristic length and time scales of the membrane fluctuations and the characteristic scale of the diffusing particle, the lateral diffusion process can be well approximated by a Brownian motion on the plane with constant diffusion tensor $D$ which depends in a highly nonlinear way on the detailed properties of the surface. The effective diffusion tensor will depend on the relative scales of the spatial and temporal fluctuations and, for different scaling regimes, we prove the existence of a macroscopic limit in each case." @default.
- W2951582263 created "2019-06-27" @default.
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- W2951582263 date "2013-11-05" @default.
- W2951582263 modified "2023-09-23" @default.
- W2951582263 title "A multiscale analysis of diffusions on rapidly varying surfaces" @default.
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- W2951582263 doi "https://doi.org/10.48550/arxiv.1311.1007" @default.
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