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Related Experiment Video

Updated: May 19, 2026

Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration

Obtention of Giant Unilamellar Hybrid Vesicles by Electroformation and Measurement of their Mechanical Properties by Micropipette Aspiration

Published on: January 19, 2020

Microdomain evolution on giant unilamellar vesicles.

Anand Embar¹, John Dolbow, Eliot Fried

¹Department of Civil Engineering, Duke University, Durham, NC 27708, USA.

Biomechanics and Modeling in Mechanobiology

|August 22, 2012

Summary

This study introduces a chemo-mechanical model for giant unilamellar vesicle (GUV) microdomain evolution during shape changes. The model simulates how chemical and mechanical factors influence domain formation and vesicle deformation.

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Published on: January 22, 2015

Area of Science:

Biophysics
Materials Science
Computational Modeling

Background:

Giant unilamellar vesicles (GUVs) exhibit complex domain formation crucial for cellular processes.
Understanding the interplay between membrane mechanics and chemical composition is key to GUV behavior.

Purpose of the Study:

To develop and validate a chemo-mechanical model for microdomain evolution on deforming GUVs.
To investigate the influence of distinct timescales between shape change and species transport on GUV dynamics.

Main Methods:

A phase-field framework was employed to model coupled chemo-mechanical processes.
The finite-element method with a uniform cubic spline basis was used for numerical discretization.
Non-dimensionalized curvature and chemical contributions to vesicle energetics were incorporated.

Main Results:

The model successfully captures microdomain formation and evolution coupled with vesicle shape deformation.
Numerical examples demonstrate curvature-dependent domain sorting.
The influence of line tension on shape deformation was analyzed.

Conclusions:

The developed chemo-mechanical model provides a robust framework for studying GUV microdomain dynamics.
The findings offer insights into the physical mechanisms governing lipid domain organization in vesicles.