Kojima Seiji
Division of Materials Science, University of Tsukuba, Tsukuba 305-8573, Japan.
Materials (Basel). 2022 May 13;15(10):3518. doi: 10.3390/ma15103518.
L. Brillouin predicted inelastic light scattering by thermally excited sound waves in 1922. Brillouin scattering is a non-contact and non-destructive method to measure sound velocity and attenuation. It is possible to investigate the elastic properties of gases, liquids, glasses, and crystals. Various kinds of phase transitions, i.e., liquid-glass transitions, crystallization, polymorphism, and denaturation have been studied by changing the temperature, pressure, time, and external fields such as the electric, magnetic, and stress fields. Nowadays, Brillouin scattering is extensively used to measure various elementary excitations and quasi-elastic scattering in the gigahertz range between 0.1 and 1000 GHz. A brief history, spectroscopic methods, and Brillouin scattering studies in materials science on ferroelectric materials, glasses, and proteins are reviewed.
1922年,L. 布里渊预测了热激发声波引起的非弹性光散射。布里渊散射是一种测量声速和衰减的非接触、非破坏性方法。研究气体、液体、玻璃和晶体的弹性性质成为可能。通过改变温度、压力、时间以及电场、磁场和应力场等外部场,人们对各种相变,即液-玻璃转变、结晶、多晶型和变性进行了研究。如今,布里渊散射被广泛用于测量0.1至1000吉赫兹千兆赫兹范围内的各种元激发和准弹性散射。本文综述了布里渊散射的简史、光谱方法以及在材料科学中对铁电材料、玻璃和蛋白质的研究。