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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.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Updated: Jun 1, 2026

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping

Published on: October 24, 2014

Nanomechanical characterization by double-pass force-distance mapping.

Yavuz S Dagdas¹, M Necip Aslan, Ayse B Tekinay

¹UNAM Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, Turkey.

|June 16, 2011

Summary

This summary is machine-generated.

High-speed force-distance mapping is achieved using a novel double-pass technique. This method enables rapid data acquisition for imaging, eliminating the need for real-time feedback during measurements.

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Last Updated: Jun 1, 2026

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping

Published on: October 24, 2014

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

Area of Science:

Atomic Force Microscopy
Nanotechnology
Materials Science

Background:

Accurate force-distance measurements are crucial for understanding nanoscale interactions.
Traditional methods can be limited by speed and the need for constant feedback control.
Characterizing soft materials like nanofibers requires sensitive and efficient techniques.

Purpose of the Study:

To develop a high-speed force-distance mapping technique.
To improve the efficiency of nanoscale force measurements.
To enable rapid imaging of material properties.

Main Methods:

A double-pass scanning scheme was implemented using Atomic Force Microscopy (AFM).
Topography was mapped in tapping mode during the first pass.
Force-distance curves were acquired in the second pass with a vibrating sample and deactivated cantilever dither, utilizing topography data for tip positioning.

Main Results:

High-speed force-distance curves were recorded at kHz frequencies.
The technique achieved small peak interaction forces.
The method was successfully demonstrated on self-assembled peptidic nanofibers, producing detailed images.

Conclusions:

The double-pass scheme significantly enhances the speed of force-distance mapping.
Eliminating feedback during measurements simplifies the process and improves data acquisition rates.
This technique offers a powerful new tool for nanoscale material characterization.