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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ellipsoidal Relaxation of Deformed Vesicles

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Author(s):
Yu, Miao [1] ; Lira, Rafael B. [2, 3] ; Riske, Karin A. [2] ; Dimova, Rumiana [3] ; Lin, Hao [1]
Total Authors: 5
Affiliation:
[1] Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 - USA
[2] Univ Fed Sao Paulo, Dept Biofis, BR-04044020 Sao Paulo - Brazil
[3] Max Planck Inst Colloids & Interfaces, Dept Theory & Bio Syst, D-14424 Potsdam - Germany
Total Affiliations: 3
Document type: Journal article
Source: Physical Review Letters; v. 115, n. 12 SEP 18 2015.
Web of Science Citations: 14
Abstract

Theoretical analysis and experimental quantification on the ellipsoidal relaxation of vesicles are presented. The current work reveals the simplicity and universal aspects of this process. The Helfrich formula is shown to apply to the dynamic relaxation of moderate-to-high tension membranes, and a closed-form solution is derived which predicts the vesicle aspect ratio as a function of time. Scattered data are unified by a time scale, which leads to a similarity behavior, governed by a distinctive solution for each vesicle type. Two separate regimes in the relaxation are identified, namely, the ``entropic{''} and the ``constant-tension{''} regimes. The bending rigidity and the initial membrane tension can be simultaneously extracted from the data analysis, posing the current approach as an effective means for the mechanical analysis of biomembranes. (AU)

FAPESP's process: 13/07246-5 - Electroporation and fusion of electrically charged vesicles
Grantee:Rafael Bezerra de Lira
Support Opportunities: Scholarships abroad - Research Internship - Doctorate