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Experimental and Data Analysis Workflow for Soft Matter Nanoindentation
Published on: January 18, 2022
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A methodological framework for nanomechanical characterization of soft biomaterials and polymers
Sofia E Arevalo1, Donna M Ebenstein2, Lisa A Pruitt1
1Department of Mechanical Engineering, University of California, Berkeley, CA, USA.
Journal of the Mechanical Behavior of Biomedical Materials
|August 12, 2022
Summary
Nanoindentation measures material properties by indenting surfaces. This study presents a framework to overcome challenges in testing soft and hydrated biomaterials, improving accuracy for researchers.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Nanotechnology
Background:
- Nanoindentation is a technique to measure local material properties like modulus and hardness.
- It's applicable to elastic, viscoelastic, and biological materials, offering insights into nano- and microscale properties.
- Challenges arise with soft/hydrated materials, including adhesion and surface detection issues.
Purpose of the Study:
- To address challenges and potential errors in nanoindentation of soft or hydrated materials.
- To explore best practices for mitigating experimental error in these complex samples.
- To develop a comprehensive nanoindentation testing framework for soft biomaterials and polymers.
Main Methods:
- Review of existing nanoindentation literature.
- Application of laboratory testing expertise.
- Development of a structured testing framework and best practices.
Main Results:
- Identification of key challenges in nanoindentation of soft/hydrated materials.
- Establishment of protocols to mitigate experimental errors.
- Creation of a foundational framework for researchers.
Conclusions:
- A robust framework is needed for reliable nanoindentation of soft/hydrated biomaterials.
- Addressing specific challenges improves data accuracy and reproducibility.
- This work provides essential guidance for researchers in the field.
