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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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Related Experiment Video

Updated: Feb 19, 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

Simultaneous topography imaging and broadband nanomechanical mapping on atomic force microscope.

Tianwei Li¹, Qingze Zou²

¹Department of Electrical and Computer Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America.

|November 1, 2017

Summary

This summary is machine-generated.

This study introduces a new atomic force microscope method for simultaneous imaging and broadband nanomechanical mapping of soft materials. This technique overcomes limitations of current methods, enabling detailed analysis of material properties and morphology.

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

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Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

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

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

Published on: December 20, 2016

Area of Science:

Materials Science
Nanotechnology
Surface Science

Background:

Simultaneous imaging and nanomechanical mapping are crucial for understanding dynamic material behaviors, such as cell endocytosis.
Existing nanomechanical mapping techniques are limited to static elasticity or narrow-band viscoelasticity and cannot simultaneously capture topography.
Current methods lack the capability for broadband nanomechanical mapping and concurrent topographic imaging.

Purpose of the Study:

To develop an atomic force microscope (AFM)-based approach for simultaneous imaging and broadband nanomechanical mapping of soft materials in air.
To overcome the limitations of existing techniques in capturing dynamic material properties and morphology concurrently.
To enable correlation of morphological and mechanical evolutions during dynamic processes.

Main Methods:

Augmentation of the imaging process with an excitation force stimulus containing a rich frequency spectrum for nanomechanical mapping.
Utilizing a Kalman-filtering technique to decouple and separate imaging and mapping signals.
Employing a system-inversion method for online quantification of sample indentation and a data-driven feedforward-feedback control for topography tracking.

Main Results:

Successful demonstration of simultaneous imaging and broadband nanomechanical mapping.
Quantification of sample indentation and consideration of topography tracking errors for accurate topographic quantification.
Experimental validation on a polydimethylsiloxane sample with a pre-fabricated pattern.

Conclusions:

The proposed approach effectively addresses the limitations of current nanomechanical mapping techniques.
This method allows for simultaneous acquisition of high-resolution topography and broadband nanomechanical properties.
The technique provides a powerful tool for investigating the complex interplay between morphology and mechanics in soft materials.