Koruk Hasan, El Ghamrawy Ahmed, Pouliopoulos Antonios N, Choi James J
Noninvasive Surgery and Biopsy Laboratory, Department of Bioengineering, Imperial College London , London SW7 2AZ, United Kingdom.
Appl Phys Lett. 2015 Nov 30;107(22):223701. doi: 10.1063/1.4936345. Epub 2015 Dec 1.
We propose acoustic particle palpation-the use of sound to press a population of acoustic particles against an interface-as a method for measuring the qualitative and quantitative mechanical properties of materials. We tested the feasibility of this method by emitting ultrasound pulses across a tunnel of an elastic material filled with microbubbles. Ultrasound stimulated the microbubble cloud to move in the direction of wave propagation, press against the distal surface, and cause deformations relevant for elasticity measurements. Shear waves propagated away from the palpation site with a velocity that was used to estimate the material's Young's modulus.
我们提出了声学粒子触诊法——利用声音将一群声学粒子压向一个界面——作为一种测量材料定性和定量力学性能的方法。我们通过在充满微气泡的弹性材料通道中发射超声脉冲来测试这种方法的可行性。超声刺激微气泡云朝着波传播的方向移动,压向远端表面,并引起与弹性测量相关的变形。剪切波以用于估计材料杨氏模量的速度从触诊部位传播开来。