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Communication Dans Un Congrès Année : 2020

High frequency elastic wave propagation in micro-elastography

Résumé

We recently proposed an alternative elasticity measurement technique based on elastic wave propagation within a single cell. At this scale, waves at a frequency never 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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Dates et versions

hal-03240366 , version 1 (01-06-2021)

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Citer

Gabrielle Laloy-Borgna, Ali Zorgani, Bruno Giammarinaro, Stefan Catheline. High frequency elastic wave propagation in micro-elastography. Forum Acusticum, Dec 2020, Lyon, France. pp.1089-1089, ⟨10.48465/fa.2020.1105⟩. ⟨hal-03240366⟩
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