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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

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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Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Atomic force microscopy (AFM).

Andreea Trache1, Gerald A Meininger

  • 1Department of Systems Biology & Translational Medicine, College of Medicine, Texas A&M Health Science Center, College Station, Texas, USA.

Current Protocols in Microbiology
|September 5, 2008
PubMed
Summary

Atomic force microscopy (AFM) images biological samples under liquid by detecting cantilever deflections from molecular interactions. This technique offers high-resolution structural, mechanical, and functional insights into live cells and molecular events.

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Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Published on: October 24, 2014

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Area of Science:

  • Biophysics
  • Microbiology
  • Nanotechnology

Background:

  • Atomic force microscopy (AFM) is crucial for biological sample analysis.
  • It enables imaging of surfaces in liquid environments.
  • AFM detects molecular adhesion forces via cantilever deflections.

Purpose of the Study:

  • To present basic AFM components and operation modes.
  • To provide sample preparation tips for AFM.
  • To review AFM applications in microbiology.

Main Methods:

  • Utilizes a cantilever tip for physical interaction with cell surfaces.
  • Detects adhesion forces as cantilever deflections.
  • Enables imaging of live cells at atomic resolution.

Main Results:

  • AFM provides direct structural, mechanical, and functional information.
  • It allows probing of single molecular events in living cells.
  • High-resolution imaging under physiological conditions is achieved.

Conclusions:

  • AFM is a unique technique for high-resolution analysis of biological samples.
  • Its applications in microbiology are diverse and significant.
  • The method facilitates understanding of cellular structures and functions at the molecular level.