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Related Experiment Video

Updated: May 2, 2026

Author Spotlight: Studying Biomechanics of Circulating Cells by Modulating Their Electrodeformation Behavior

Author Spotlight: Studying Biomechanics of Circulating Cells by Modulating Their Electrodeformation Behavior

Published on: October 13, 2023

Vesicle deformation in DC electric pulses.

Paul F Salipante¹, Petia M Vlahovska

¹School of Engineering, Brown University, Providence, RI 02912, USA. petia_vlahovska@brown.edu.

|March 19, 2014

Summary

Giant vesicles deform from oblate to prolate shapes when exposed to electric fields. This shape change, observed in experiments, can quantify membrane properties like viscosity and capacitance.

Area of Science:

Biophysics
Soft Matter Physics
Materials Science

Background:

Giant vesicles are model systems for cell membranes.
Electric fields can induce deformation in vesicles.
Understanding vesicle dynamics is crucial for cell biology and nanotechnology.

Purpose of the Study:

To experimentally investigate the transient deformation of giant vesicles under DC electric pulses.
To validate theoretical predictions of shape transitions (oblate to prolate).
To establish a method for measuring membrane properties using vesicle deformation.

Main Methods:

Utilized square DC electric pulses to deform giant vesicles.
Employed a two-step pulse technique to prevent electroporation and vesicle collapse.

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Imaging of Extracellular Vesicles by Atomic Force Microscopy

Imaging of Extracellular Vesicles by Atomic Force Microscopy

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Last Updated: May 2, 2026

Author Spotlight: Studying Biomechanics of Circulating Cells by Modulating Their Electrodeformation Behavior

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Published on: October 13, 2023

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Imaging of Extracellular Vesicles by Atomic Force Microscopy

Imaging of Extracellular Vesicles by Atomic Force Microscopy

Published on: September 11, 2019

Developed and applied a theoretical model for vesicle deformation and relaxation dynamics.

Main Results:

Experimentally observed the predicted transition from oblate to prolate ellipsoidal shapes.
Demonstrated agreement between experimental observations and the theoretical model.
Confirmed that vesicle shape changes correlate with applied electric field strength and duration.

Conclusions:

The transient deformation of giant vesicles in electric fields is a predictable phenomenon.
The observed shape transition provides a novel method for characterizing membrane viscosity and capacitance.
This study bridges experimental observation and theoretical modeling of vesicle electrodynamics.