响应膜上的胶体吸附？ 使用Monte Carto模型模拟研究了带有正负电荷的膜表面对不同大小和电荷的胶体吸附情况。。。。。 The adsorption of colloids with varying sizes and charges onto a surface carrying both negative and positive charges representing a membrane has been investigated by using a simple model employing Monte Carlo simulations. The membrane is made of positive and negative charges (headgroups) that are allowed to move along the membrane, simulating the translational diffusion of the lipids, and are also allowed to protrude into the solution, giving rise to a fluid and soft membrane. When an uncharged colloid is placed in the vicinity of the membrane, a short-ranged repulsion between the colloid and the membrane is observed and the membrane will deflect to avoid coming into contact with the colloid. When the colloid is charged, the membrane response is two-fold: the headgroups of the membrane move towards the colloid as to partly embrace it, and the positive headgroups of the membrane approach the oppositely charged colloid, inducing the demixing of the membrane lipids (polarization). The presence of protrusions enhances the polarization of the membrane. Potential of mean force calculations show that protrusions give rise to a more long-ranged attractive colloid-membrane potential which has a smaller magnitude at short separations.查看更多0个回答 . 4人已关注
第1天
关注盖德视界
添加小助手
