Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia.
Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia.
Molecules. 2021 Jan 21;26(3):561. doi: 10.3390/molecules26030561.
Experimental data on the active Brownian motion of single particles in the RF (radio-frequency) discharge plasma under the influence of thermophoretic force, induced by laser radiation, depending on the material and type of surface of the particle, are presented. Unlike passive Brownian particles, active Brownian particles, also known as micro-swimmers, move directionally. It was shown that different dust particles in gas discharge plasma can convert the energy of a surrounding medium (laser radiation) into the kinetic energy of motion. The movement of the active particle is a superposition of chaotic motion and self-propulsion.
实验数据表明，在激光辐射引起的热泳力的影响下，单个粒子在射频（RF）放电等离子体中的主动布朗运动，取决于粒子的材料和表面类型。与被动布朗粒子不同，主动布朗粒子，也称为微游泳者，具有定向运动的能力。结果表明，在气体放电等离子体中的不同尘埃粒子可以将周围介质（激光辐射）的能量转化为运动的动能。主动粒子的运动是混沌运动和自推进的叠加。
