Generation of Shear Waves by Laser in Soft Media in the Ablative and Thermoelastic Regimes.
Generation of Shear Waves by Laser in Soft Media in the Ablative and Thermoelastic Regimes.
复制标题
在烧蚀和热弹性状态下，激光在软介质中产生剪切波。
DOI：
10.1063/1.4968538
复制
发表时间：
2016
影响因子：
4
通讯作者：
G. Cloutier
中科院分区：
文献类型：
--
作者：
Pol Grasland;Yuankang Lu;F. Lesage;S. Catheline;G. Cloutier
本文介绍了用激光束在软介质中产生弹性剪切波。我们的实验显示了两种不同的制度，这取决于激光能量。基本现象的物理建模揭示了由温度升高引起的局部膨胀引起的热弹性制度，以及由激光引起的介质部分蒸发引起的烧蚀制度。计算的理论位移接近实验测量。基于物理模型的数值研究给出了与实验产生的传播模式相当的传播模式。这些结果为利用激光束的剪切波弹性成像技术（一种从剪切波传播测量软固体刚度的技术）的可行性提供了物理基础。
This article describes the generation of elastic shear waves in a soft medium using a laser beam. Our experiments show two different regimes depending on laser energy. Physical modeling of the underlying phenomena reveals a thermoelastic regime caused by a local dilatation resulting from temperature increase, and an ablative regime caused by a partial vaporization of the medium by the laser. Computed theoretical displacements are close to experimental measurements. A numerical study based on the physical modeling gives propagation patterns comparable to those generated experimentally. These results provide a physical basis for the feasibility of a shear wave elastography technique (a technique which measures a soft solid stiffness from shear wave propagation) by using a laser beam.
影响因子：
56.9
作者：
MUTHUPILLAI, R;LOMAS, DJ;EHMAN, RL
通讯作者：
EHMAN, RL
登记。
DOI：
10.1007/978-1-4939-7647-8_1
发表时间：
2018
期刊：
Neuromethods
影响因子：
--
作者：
Joshi,AnandA
通讯作者：
Joshi,AnandA