Bi₂Se₃, as an important photothermal conversion semiconductor material, has been widely studied to realize the heat energy application. The Bi₂Se₃ nanoparticles (NPs) dispersion is prepared by the combined technology of grinding and high-speed shearing. The different size distribution of Bi₂Se₃ has been selected by tuning centrifugal rates and mechanism is discussed in detail. The NPs dispersion with radius of 330 nm has the best photothermal conversion, which selected at centrifugal rates of 3000 rpm. The Steady-state temperature of NPs dispersions at centrifugal rates of 1000 rpm can reaches 41.4 °C under 1.6 W laser irradiation.These show that the quantum confinement effect and the localized surface plasmon resonances (LSPR) of Bi₂Se₃ NPs play crucial roles for excellent photothermal conversion, which are in good agreement with the numerically theoretical calculation investigated using the finite difference time domain (FDTD) method.

作为重要的光热转换半导体材料，Bi ₂ Se ₃已经被广泛研究以实现热能的应用。Bi ₂ Se ₃纳米颗粒（NPs）分散体是通过研磨和高速剪切的组合技术制备的。Bi ₂ Se ₃的不同尺寸分布通过调整离心率来选择和详细讨论机理。半径为330 nm的NPs分散体具有最佳的光热转化率，可以在3000 rpm的离心率下选择。在1.6 W激光辐照下，NPs分散体在1000 rpm的离心速度下的稳态温度可以达到41.4°C，这表明Bi ₂ Se ₃ NPs的量子约束效应和局部表面等离子体激元共振（LSPR）起着关键作用。具有出色的光热转换性能，这与使用时差有限域（FDTD）方法研究的数值理论计算非常吻合。