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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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Related Experiment Video

Updated: Jun 17, 2026

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
10:25

Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid

Published on: December 20, 2016

New modes for subsurface atomic force microscopy through nanomechanical coupling.

L Tetard1, A Passian, T Thundat

  • 1Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6123, USA.

Nature Nanotechnology
|December 22, 2009
PubMed
Summary
This summary is machine-generated.

Mode-synthesizing atomic force microscopy uses multi-harmonic forcing to reveal nanoscale surface and subsurface information. This advanced technique enhances understanding of both synthetic and biological materials.

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Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biophysics

Background:

  • Non-destructive nanoscale characterization is crucial for understanding synthetic and biological materials.
  • Atomic Force Microscopy (AFM) traditionally measures surface topography using a force-sensing cantilever.
  • AFM tip-sample interactions reveal chemical and mechanical properties through attractive and repulsive forces.

Purpose of the Study:

  • To introduce and demonstrate mode-synthesizing atomic force microscopy (MSAFM).
  • To leverage nonlinear nanomechanical coupling for enhanced material characterization.
  • To expand the capabilities of force microscopy for surface and subsurface analysis.

Main Methods:

  • Implementing multi-harmonic forcing on both the atomic force microscope probe and the sample.
  • Analyzing the nonlinear nanomechanical coupling between the probe and the sample.
  • Utilizing the discovered spectrum of first- and higher-order couplings.

Main Results:

  • Discovery of a rich spectrum of nonlinear couplings in AFM.
  • Development of multiple new operational modes for force microscopy.
  • Successful characterization of nanofabricated samples and plant cells.

Conclusions:

  • Mode-synthesizing atomic force microscopy offers advanced nanoscale characterization.
  • The technique provides versatile surface and subsurface information.
  • MSAFM significantly expands the utility of atomic force microscopy for diverse materials.