利用布里渊散射测量弹道明胶的声速及状态方程

Sound Velocity and Equation of State of Ballistic Gelatin by Brillouin Scattering.

作者信息

Ahart Muhtar, Hemley Russell J

机构信息

Department of Physics, University of Illinois Chicago, Chicago, IL 60607, USA.

Department of Chemistry, University of Illinois Chicago, Chicago, IL 60607, USA.

出版信息

Materials (Basel). 2023 Feb 2;16(3):1279. doi: 10.3390/ma16031279.

DOI:10.3390/ma16031279

PMID:36770283

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9920082/

Abstract

Brillouin scattering spectroscopy with diamond anvil cells was used by measuring the pressure dependence of the sound-relevant polymer material, glass-forming liquid, and HO (water and ice VII) velocities of the material from ambient pressure to 12 GPa at room temperature. Measurements of 20%, 10%, and 4% gelatin solutions were performed. For comparison purposes, we also measured the pressure dependence of the sound velocity of animal tissue up to 10 GPa. We analyzed the Brillouin data using the Tait and Vinet equations of state. We discussed the possible influence of frequency dispersion on bulk modulus at low pressure. We compared the elastic moduli obtained for gelatin to those of several other polymers.

摘要

利用金刚石对顶砧细胞的布里渊散射光谱法，在室温下测量了与声音相关的聚合物材料、玻璃形成液体以及该材料在从环境压力到12吉帕压力范围内的HO（水和冰VII）速度。对20%、10%和4%的明胶溶液进行了测量。为作比较，我们还测量了动物组织在高达10吉帕压力下声速的压力依赖性。我们使用泰特状态方程和维内状态方程分析了布里渊数据。我们讨论了低频色散对低压下体积模量的可能影响。我们将明胶的弹性模量与其他几种聚合物的弹性模量进行了比较。