Shape Deformation of Ternary Vesicles Coupled with Phase Separation

Miho Yanagisawa, Masayuki Imai, and Takashi Taniguchi
Phys. Rev. Lett. 100, 148102 – Published 8 April 2008

Abstract

We report an experimental study on shape deformations of ternary vesicles undergoing phase separation under an osmotic pressure difference. The phase separation on various shape vesicles causes unique shape-deformation branches. In the domain coarsening stage, prolate, discocyte, and starfish vesicles show a shape convergence to discocytes, whereas a pearling instability is observed in tube vesicles. In late stages, the domains start to bud towards the inside or outside of the vesicle depending on the excess area. We discuss the deformation branches based on the membrane elasticity model.

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  • Received 18 October 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.148102

©2008 American Physical Society

Authors & Affiliations

Miho Yanagisawa1, Masayuki Imai1, and Takashi Taniguchi2

  • 1Department of Physics, Ochanomizu University, Otsuka, Bunkyo, Tokyo 112-8610, Japan
  • 2Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

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Issue

Vol. 100, Iss. 14 — 11 April 2008

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