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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 15, 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

Multifrequency high-speed phase-modulation atomic force microscopy in liquids.

Yan Jun Li1, Kouhei Takahashi, Naritaka Kobayashi

  • 1Department of Applied Physics, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan. liyanjun@ap.eng.osaka-u.ac.jp

Ultramicroscopy
|March 12, 2010
PubMed
Summary
This summary is machine-generated.

We developed multifrequency high-speed phase-modulation atomic force microscopy (PM-AFM) to simultaneously map material properties like topography, energy dissipation, and elasticity at high speeds.

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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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Area of Science:

  • Materials Science
  • Surface Science
  • Nanotechnology

Background:

  • Atomic Force Microscopy (AFM) is a powerful tool for nanoscale imaging.
  • Traditional AFM techniques can be limited in speed and the range of properties they can measure simultaneously.

Purpose of the Study:

  • To introduce and validate a novel high-speed AFM technique.
  • To enable simultaneous imaging of multiple material properties.

Main Methods:

  • Developed multifrequency high-speed phase-modulation atomic force microscopy (PM-AFM) in constant-amplitude (CA) mode.
  • Simultaneously excited the first two flexural modes of a cantilever.
  • Performed theoretical investigations and experimental demonstrations.

Main Results:

  • The technique allows simultaneous imaging of surface topography, energy dissipation, and elasticity (nonlinear mapping).
  • Achieved high-speed imaging at 5 frames/s.
  • Demonstrated the technique on a polystyrene (PS) and polyisobutylene (PIB) polymer-blend thin-film surface in water.

Conclusions:

  • Multifrequency high-speed PM-AFM offers a significant advancement in material characterization.
  • The method provides a new pathway for rapid, multi-property nanoscale imaging.