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Strain and Elastic Modulus

Strain and Elastic Modulus

The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...

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Related Experiment Video

Updated: May 14, 2026

A Novel Method for Localizing Reporter Fluorescent Beads Near the Cell Culture Surface for Traction Force Microscopy

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Published on: September 16, 2014

Revealing Hidden Length by Force: Decoupling Modulus and Toughness in Network Gels.

Shakkeeb Thazhathethil¹, Xiaoran Hu¹

¹Department of Chemistry, BioInspired Institute, Syracuse University, Syracuse, New York 13244, United States.

ACS Central Science

|October 27, 2025

Summary

This study shows that reactive strand extension can separate toughness from modulus in gels. This finding is crucial for designing advanced polymer materials with tailored mechanical properties.

Area of Science:

Materials Science
Polymer Chemistry
Rheology

Background:

Toughness and modulus are key mechanical properties of polymer gels.

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Traditionally, increasing one often decreases the other, limiting material design.

Understanding the relationship between these properties is essential for developing advanced materials.