How good is the Voigt model for elastic wave propagation in micro-elastography?

Gabrielle Laloy-Borgna; Stefan Catheline; Ali Zorgani

doi:10.1117/12.2579249

5 March 2021 How good is the Voigt model for elastic wave propagation in micro-elastography?

Gabrielle Laloy-Borgna, Stefan Catheline, Ali Zorgani

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Proceedings Volume 11645, Optical Elastography and Tissue Biomechanics VIII; 1164511 (2021) https://doi.org/10.1117/12.2579249
Event: SPIE BiOS, 2021, Online Only

Abstract

We recently proposed an alternative elasticity measurement technique based on elastic wave propagation within a single cell. At this scale, waves at a frequency rarely reached in the field of elastography (15kHz), are captured using an ultrafast camera and a microscope. This technique is based on the local measurement of the speed of a shear wave, a type of elastic wave. By assuming an infinite and homogeneous elastic medium with respect to the wavelength, the shear modulus μ (elasticity) is estimated. These latter assumptions are discussed through experiments conducted in controlled elastic solids at micro-scale. The conclusion is that wave guide effects as well as viscosity are crucial for quantitative mapping of elasticity.

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Gabrielle Laloy-Borgna, Stefan Catheline, and Ali Zorgani "How good is the Voigt model for elastic wave propagation in micro-elastography?", Proc. SPIE 11645, Optical Elastography and Tissue Biomechanics VIII, 1164511 (5 March 2021); https://doi.org/10.1117/12.2579249

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