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

作者： Ashton E. Enrriques1, Sean Howard2, Raju Timsina3, Nawal K. Khadka3, Amber N. Hoover4, Allison E. Ray5, Ling Ding4, Chioma Onwumelu6, Stephan Nordeng6, Laxman Mainali3,7, Gunes Uzer2, Paul H. Davis1,8 1Micron School of Materials Science & Engineering,Boise State University, 2Department of Mechanical & Biomedical Engineering,Boise State University, 3Department of Physics,Boise State University, 4Energy and Environmental Science and Technology,Idaho National Laboratory, 5Science and Technology,Idaho National Laboratory, 6Harold Hamm School of Geology & Geological Engineering,University of North Dakota, 7Biomolecular Sciences Graduate Program,Boise State University, 8Center for Advanced Energy Studies

简介：

Overview

This article discusses the use of atomic force microscopy (AFM) cantilever-based nanoindentation to measure nanoscale mechanical properties of materials. It highlights the importance of accurately determining the contact area and force applied by the AFM probe for quantitative measurements.

Key Study Components

Area of Science

• Neuroscience
• Biophysics
• Materials Science

Background

• AFM enables high-resolution imaging and mechanical property measurement.
• It can differentiate between healthy and diseased tissues based on mechanical properties.
• Calibration of the AFM probe is crucial for accurate measurements.
• AFM can be used in various environments, including air and fluid.

Purpose of Study

• To provide best practices for implementing AFM cantilever-based nanoindentation.
• To measure elastic modulus and other nanomechanical properties.
• To enhance understanding of material properties at the nanoscale.

Methods Used

• Selection of appropriate AFM probes based on sample characteristics.
• Calibration of the AFM probe for accurate contact area and force measurement.
• Conducting nanoindentation in both air and fluid environments.
• Co-localized topographical imaging during mechanical property assessment.

Main Results

• Successful measurement of mechanical properties across a range of materials.
• Demonstration of the ability to distinguish between different tissue types.
• Validation of calibration techniques for improved measurement accuracy.
• Insights into the mechanical behavior of soft and hard samples.

Conclusions

• AFM cantilever-based nanoindentation is a powerful tool for nanoscale analysis.
• Proper calibration and probe selection are essential for reliable results.
• This technique can advance research in material science and biology.

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