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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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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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Nanomotion detection based on atomic force microscopy cantilevers.

A C Kohler1, L Venturelli1, G Longo2

  • 1Laboratoire de Physique de la Matière Vivante, EPFL, CH-1015 Lausanne, Switzerland.

Cell Surface (Amsterdam, Netherlands)
|August 4, 2020
PubMed
Summary
This summary is machine-generated.

Atomic force microscopy (AFM) detects nanomotion oscillations in living organisms. This technique monitors cellular metabolism and viability, offering insights for microbiology and space exploration.

Keywords:
AFMAntibiotic Susceptibility Test (AST)Cell viabilityNanomotion detection

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Area of Science:

  • Biophysics
  • Microbiology
  • Cell Biology

Background:

  • Nanomotion oscillations in biological specimens can be detected using atomic force microscopy (AFM) or specialized low-noise devices.
  • These oscillations reflect the microorganism's metabolic status and viability when exposed to various stimuli.
  • Recent advancements have enabled the determination of nanomotion patterns for diverse microorganisms.

Purpose of the Study:

  • To review the technique of nanomotion detection in detail.
  • To present findings from studies on numerous microorganisms.
  • To discuss the potential applications of nanomotion analysis in scientific research and exploration.

Main Methods:

  • Attaching biological specimens to a silicon-based sensor.
  • Monitoring nano-scale motion over time using atomic force microscopy (AFM) or dedicated devices.
  • Analyzing nanomotion patterns to assess cellular status and metabolism.

Main Results:

  • Established nanomotion patterns for various bacteria, yeasts, and mammalian cells.
  • Demonstrated that nanomotion oscillations persist as long as the organism remains viable.
  • Showcased the correlation between nanomotion patterns and the microorganism's response to stimuli.

Conclusions:

  • Nanomotion analysis is a viable technique for assessing the status of biological specimens.
  • The method holds significant potential for applications in fundamental research, medical microbiology, and space exploration.
  • Further research can expand the understanding and application of nanomotion detection.