Disclaimer:

    The views, information, or opinions expressed in the Industry News RSS feed belong solely to the author and do not necessarily represent those of IDEX Health & Science and its employees.

    Particle method for phase separation on membranes

    Article obtained from Springer RSS Feed.

    Abstract

    The phenomenon of phase separation has been observed in lipid membranes. This process is remarkable, since both in-membrane and solvent-mediated hydrodynamic effects affect separation dynamics. The Cahn–Hilliard model for phase separation is here considered, coupled with the overdamped (Stokes) fluid equations. The convection term of the Cahn–Hilliard equations, which is due to hydrodynamic effects, is here treated by a Lagrangian method, in which fluid particles move along the velocity field carrying the concentration field. The method is combined with a projection onto a fixed regular mesh, where the rest of the equations are solved in Fourier space. In this space, spatial derivatives are evaluated quite easily. Moreover, the effect of the underlying fluid is straightforward in Fourier space, through the modification of the Oseen tensor. This hybrid treatment is the main contribution of this work. Results are in good agreement with experimental findings. Some agreement is found with previous simulations, but some striking differences are present.

    READ MORE
    Aug, 21 2018 |

    IDEX Health & Science is the global authority in fluidics and optics, bringing to life advanced optofluidic technologies with our products, people, and engineering expertise. Intelligent solutions for life.