title: Long-range attraction of particles adhered to lipid vesicles.
abstract: 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.
authors: Department of Applied Physics and Integrated Graduate Program in Physical and Engineering Biology, Yale University, New Haven, Connecticut 06511, USA.
authors: Raphael
authors: R
authors: Sarfati
authors: Department of Materials ETH Zürich, 8092 Zürich, Switzerland and School of Engineering and Applied Sciences, Yale University, New Haven, Connecticut 06511, USA.
authors: Eric R
authors: ER
authors: Dufresne