Charging and Levitation of Particles Using UV Irradiation and Electric Field

OpenDust: A fast GPU-accelerated code for calculation forces, acting on microparticles in a plasma flow

“…Problem of calculation forces, acting on microparticles of condensed matter, so-called dust particles, in a plasma flowing environment, arises in a variety of industry applications [1,2,3] and fundamental issues [4,5,6,7], related to the complex plasma physics [8]. For example, flowing plasma can lead to the release of pollutant particles from a processed sample during extreme ultraviolet lithography important for microelectronics [1,3,2], which can lower the quality and productivity of the manufacturing processes. Controlling and minimizing contamination of such particles requires detailed study of the forces, acting on them.…”

Rapid measurement of the net charge on nanoparticles in optical levitation system

“…Moreover, our levitation-based, single-nanoparticle method can be applied to in situ nanoparticle measurements requiring a high-precision charge and mass measurements, such as for levitated particles including lunar dust and aerosols. 19,20) The motion of a particle of mass m and the number of charges n q captured in an optical trap can be described by the following equation for a thermally and harmonically driven damped resonator: 17)  w w…”