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Atomic Force Microscopy

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.
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Related Experiment Video

Updated: May 12, 2026

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

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

Published on: December 2, 2022

A simple approximation for forces exerted on an AFM tip in liquid.

Matthew Watkins¹, Bernhard Reischl

¹London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom. matthew.watkins@ucl.ac.uk

The Journal of Chemical Physics

|April 26, 2013

Summary

This summary is machine-generated.

Researchers found a direct link between atomic force microscope (AFM) tip force and water density. This discovery significantly speeds up AFM simulations by removing the need for location-specific force calculations.

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Covalent Attachment of Single Molecules for AFM-based Force Spectroscopy

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Last Updated: May 12, 2026

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

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

Published on: December 2, 2022

Covalent Attachment of Single Molecules for AFM-based Force Spectroscopy

Covalent Attachment of Single Molecules for AFM-based Force Spectroscopy

Published on: March 16, 2020

Area of Science:

Physics
Materials Science
Surface Science

Background:

Understanding atomic force microscopy (AFM) imaging relies on accurately measuring tip-sample interactions.
Simulating these interactions is computationally intensive, often requiring detailed models at each spatial point.

Purpose of the Study:

To establish a direct, quantitative relationship between the force exerted by an atomic force microscope tip and the local water density.
To simplify and accelerate AFM simulation methods.

Main Methods:

Development of a simplified force-to-water density model.
Analysis of the conditions under which this relationship is valid for common AFM tip types.

Main Results:

A one-to-one relationship between tip force and unperturbed equilibrium water density was proposed.
The model is expected to show qualitative agreement for two major classes of AFM tips.
This approach eliminates the need for simulations at each tip location.

Conclusions:

The established force-water density connection offers a significant advancement in AFM simulation efficiency.
Simulations can be accelerated by approximately three orders of magnitude compared to existing methods.
This simplification is applicable to a substantial portion of currently prepared AFM tips.