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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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Related Experiment Video

Updated: Jul 12, 2025

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
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Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

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Measuring mechanical properties with high-speed atomic force microscopy.

Christian Ganser1, Takayuki Uchihashi1,2

  • 1Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan.

Microscopy (Oxford, England)
|November 2, 2023
PubMed
Summary
This summary is machine-generated.

High-speed atomic force microscopy (HS-AFM) now measures mechanical properties of biomolecules, not just topography. This technique reveals dynamic mechanisms in proteins and cellular structures with high resolution.

Keywords:
high-speed atomic force microscopy (HS-AFM)mechanical properties

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Area of Science:

  • Biophysics
  • Materials Science
  • Nanotechnology

Background:

  • High-speed atomic force microscopy (HS-AFM) is a powerful technique for observing the dynamics of single biomolecules and complex structures.
  • Historically, HS-AFM primarily focused on surface topography for structural analysis, yielding significant discoveries.
  • The capabilities of HS-AFM have recently expanded beyond topography to include the measurement of mechanical properties.

Purpose of the Study:

  • To review methodologies for assessing mechanical properties using HS-AFM.
  • To highlight the application of these methods to various biological systems.
  • To demonstrate how HS-AFM's unique capabilities enable the investigation of previously inaccessible mechanisms.

Main Methods:

  • Exploration of diverse methodologies for mechanical property assessment via HS-AFM.
  • Focus on techniques ranging from semi-quantitative approaches to precise force measurements.
  • Analysis of corresponding sample responses to applied forces.

Main Results:

  • HS-AFM enables quantifiable force application and high spatiotemporal resolution.
  • Successful application to single proteins (e.g., bridging integrator-1), ion channels (e.g., Piezo1), microtubules, and supramolecular fibers.
  • Unraveling of dynamic mechanisms in these systems through combined force and high-resolution imaging.

Conclusions:

  • HS-AFM is a versatile tool for both structural and mechanical analysis of biomolecules.
  • The technique provides unique insights into the dynamics and functional mechanisms of biological systems.
  • HS-AFM significantly advances the study of molecular and cellular mechanics at high resolution.