Long-range attraction of particles adhered to lipid vesicles

被引：25
|
作者：
Sarfati, Raphael [1 ,2 ]
Dufresne, Eric R. [3 ,4 ]
机构：
[1] Yale Univ, Dept Appl Phys, New Haven, CT 06511 USA
[2] Yale Univ, Integrated Grad Program Phys & Engn Biol, New Haven, CT 06511 USA
[3] ETH, Dept Mat, CH-8092 Zurich, Switzerland
[4] Yale Univ, Sch Engn & Appl Sci, New Haven, CT 06511 USA
来源：
PHYSICAL REVIEW E | 2016年 / 94卷 / 01期
基金：
美国国家科学基金会;
关键词：
AGGREGATION; MICROSCOPY; CURVATURE; MEMBRANES; SPHERES;
D O I：
10.1103/PhysRevE.94.012604
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Many biological systems fold thin sheets of lipid membrane into complex three-dimensional structures. This microscopic origami is often mediated by the adsorption and self-assembly of proteins on a membrane. As a model system to study adsorption-mediated interactions, we study the collective behavior of micrometric particles adhered to a lipid vesicle. We estimate the colloidal interactions using a maximum likelihood analysis of particle trajectories. When the particles are highly wrapped by a tense membrane, we observe strong long-range attractions with a typical binding energy of 150k(B)T and significant forces extending a few microns.
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页数：6
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