发表机构
Hebei University; South China Normal University; Soochow University（河北大学; 华南师范大学; 苏州大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
实验证明，利用设计的尘埃等离子体棘轮，双分散微球在欠阻尼强耦合下因高度依赖的棘轮势而实现不同速度甚至反向的定向输运，从而有效分离。
AI 中文摘要
实验证明，在欠阻尼和强耦合状态下，利用设计的尘埃等离子体棘轮可实现双分散微球（尘埃颗粒）的有效分离。实验发现，这些尘埃颗粒能够以不同速度进行定向输运，甚至根据放电条件沿相反方向运动，从而实现颗粒的成功分离。通过氩气电容耦合放电的流体模拟，对尘埃颗粒周围的等离子体环境进行了数值模拟。模拟结果表明，双分散尘埃颗粒悬浮在等离子体鞘层内的不同平衡高度，并经历不同的棘轮势，这些势能控制其定向输运，导致不同的流动速度。此处发现的尘埃颗粒高度依赖输运现象，为欠阻尼强耦合颗粒在尘埃等离子体棘轮中的输运基础提供了见解。
英文摘要
It is demonstrated experimentally that the effective separation of bi-dispersed microspheres (dust particles) in the underdamped and strongly-coupled regime is realized using a designed dusty plasma ratchet. Experimental findings reveal that these dust particles can undergo directional transport at varying speeds, even moving in opposite directions depending on the discharge conditions, enabling successful particle separation. Numerical simulations of the plasma environment surrounding the dust particles are performed using fluid simulations of the capacitively coupled discharge of Argon. The simulation results indicate that the bi-dispersed dust particles are suspended at different balance heights within the plasma sheath and experience distinct ratchet potentials that govern their directional transport, resulting in varied flow velocities. The discovery of height-dependent transport of dust particles here provides insights of transport fundamental of underdamped strongly-coupled particles in dusty plasma ratchets.
Comments6 figures
Journal refPhys. Rev. E 111, 065216(2025)
