arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1003.1459cond-mat.softcond-mat.stat-mechphysics.bio-ph
收藏

涨落诱导的支撑膜粘附点间的引力

Fluctuation induced attraction between adhesion sites of supported membranes

Oded Farago

摘要:

我们使用标度参数和粗粒度的蒙特卡罗模拟来研究波动介导的双层膜和支撑表面的一对粘附位点之间的相互作用。我们发现平均力势是一个无限长的吸引势,它随对距$r$:$ϕ(\vec{r})/k_BT=c\ln r$而增长,其中常数$c=2$和$c=1$分别适用于无应力和有应力的膜.当除了排除体积排斥之外,膜还通过高度依赖的吸引势与下面的表面相互作用时,在大的对距离处屏蔽势$ϕ(\vec{r})$。

英文摘要:

We use scaling arguments and coarse grained Monte Carlo simulations to study the fluctuation mediated interactions between a pair of adhesion sites of a bilayer membrane and a supporting surface. We find that the potential of mean force is an infinitely long range attractive potential that grows logarithmically with the pair distance $r$: $ϕ(\vec{r})/k_BT=c\ln r$, where the constant $c=2$ and $c=1$ for non-stressed and stressed membranes, respectively. When, in addition to excluded volume repulsion, the membrane also interacts with the underlying surface through a height-dependent attractive potential, the potential $ϕ(\vec{r})$ is screened at large pair distances.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑