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Related Experiment Video

Updated: May 23, 2026

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
10:15

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

Published on: July 22, 2015

AFM-based force-clamp monitors lipid bilayer failure kinetics.

Lorena Redondo-Morata1, Marina I Giannotti, Fausto Sanz

  • 1Institute for Bioengineering of Catalonia (IBEC), 15-21 Baldiri I Reixac, 08028 Barcelona, Spain.

Langmuir : the ACS Journal of Surfaces and Colloids
|March 27, 2012
PubMed
Summary

Atomic force microscopy (AFM)-based force clamp quantifies lipid bilayer rupture kinetics and energy barriers under constant force. This method offers new insights into membrane mechanics and its applications for studying complex biological systems.

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Area of Science:

  • Biophysics
  • Materials Science

Background:

  • Lipid bilayer rupture is a critical phenomenon in biological and material systems.
  • Previous studies primarily used constant velocity methods to investigate membrane rupture.

Purpose of the Study:

  • To explore lipid bilayer rupture using atomic force microscopy (AFM)-based force clamp.
  • To quantify rupture kinetics and energy barriers under constant force conditions.
  • To assess the suitability of AFM-based force clamp for studying lipid bilayers.

Main Methods:

  • Atomic force microscopy (AFM) in force clamp mode was employed.
  • Constant force was applied to compress single supported bilayers and multibilayers.
  • An elastic deformation model was used to calculate the affected membrane area during rupture.

Main Results:

  • Direct quantification of lipid bilayer rupture kinetics and energy barriers was achieved.
  • The study provides a novel approach compared to constant velocity methods.
  • The affected membrane area during rupture was successfully calculated.

Conclusions:

  • AFM-based force clamp is a suitable technique for studying lipid bilayer rupture.
  • Findings contribute to understanding membrane mechanics and related processes.
  • The technique can be extended to study other thin films and complex systems like cell membranes.