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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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Overview of Microscopy Techniques01:22

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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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Related Experiment Video

Updated: Oct 18, 2025

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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Nematode Epicuticle Visualisation by PeakForce Tapping Atomic Force Microscopy.

Farida Akhatova1, Gölnur Fakhrullina1, Elvira Gayazova1

  • 1Bionanotechnology Lab, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Republic of Tatarstan, Russian Federation.

Bio-Protocol
|October 1, 2021
PubMed
Summary
This summary is machine-generated.

This study presents a new Atomic Force Microscopy (AFM) method for imaging the Caenorhabditis elegans nematode cuticle in liquid. This technique minimizes imaging artifacts, offering a clearer view of nematode surface structures and mechanical properties.

Keywords:
Atomic force microscopyCaenorhabditis elegansCuticleLayer-by-Layer assemblyNematodesPeakForce Tapping

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Area of Science:

  • Biophysics
  • Nematology
  • Microscopy

Background:

  • Caenorhabditis elegans is a key model organism in biological research.
  • Studying the nematode epicuticle at the nanoscale is crucial.
  • Existing imaging methods like SEM and conventional AFM introduce artifacts.

Purpose of the Study:

  • To describe a protocol for imaging liquid-immersed Caenorhabditis elegans nematodes.
  • To visualize and numerically characterize the nematode cuticle using PeakForce Tapping AFM.
  • To overcome limitations of previous imaging techniques.

Main Methods:

  • Utilizing PeakForce Tapping mode of Atomic Force Microscopy (AFM).
  • Imaging nematodes immersed in liquid to mimic their natural environment.
  • Detailed protocol for AFM imaging of C. elegans.

Main Results:

  • Successful visualization of the C. elegans nematode cuticle in liquid.
  • Characterization of principal nematode surface structures.
  • Numerical data on the mechanical properties of the cuticle.

Conclusions:

  • PeakForce Tapping AFM in liquid is a superior method for C. elegans cuticle imaging.
  • This protocol minimizes artifacts associated with other microscopy techniques.
  • Enables detailed study of nematode surface morphology and mechanics.