This study investigates the effect of high pressure on the phonon frequency spectrum of silicon nanoparticles with two different diameters, 4.1 nm and 10.3 nm. The equations of state of Suzuki and Birch–Murnaghan were used to evaluate the volume compression ratio. It was found that the high pressure effects depend significantly on the particle size that was under consideration. The 4.1-nm particle experienced higher reduction in volume and a more significant shift in phonon frequency spectrum under a specific pressure value than the nanoparticle of a diameter of 10.3 nm did. Moreover, the Suzuki equation, which is proposed as a nanomaterial equation of state, predicts a more dramatic change in response to high pressure for the entire studies of relative volume and phonon frequency spectrum data.

这项研究调查了高压对具有两种不同直径（4.1 nm和10.3 nm）的硅纳米粒子的声子频谱的影响。Suzuki和Birch–Murnaghan的状态方程用于评估体积压缩比。已经发现，高压作用在很大程度上取决于所考虑的粒径。与直径为10.3 nm的纳米颗粒相比，在特定的压力值下，4.1 nm的颗粒体积减小得更多，声子频谱的位移更显着。此外，作为相对材料和声子频谱数据的整体研究，作为纳米材料状态方程式提出的Suzuki方程预测了对高压的更剧烈变化。