1. Fractal Brownian Motion of Colloidal Particles in Plasma.
- Author
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Koss, K. G., Lisina, I. I., Vasiliev, M. M., Alekseevskaya, A. A., Kononov, E. A., and Petrov, O. F.
- Subjects
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FRACTAL dimensions , *KINETIC energy , *JANUS particles , *BROWNIAN motion , *PARTICLE motion , *PLASMA flow , *COPPER , *LASER beams - Abstract
Experimental data on the motion of a single colloidal particle in a trap in the near-electrode layer of an RF-discharge plasma are analyzed. The experiment was conducted with three types of colloids: uncoated melamine-formaldehyde particles, melamine-formaldehyde particles with a thin copper coating, and Janus particles partially coated with iron. The colloids were exposed to a flat wide laser beam, allowing them to be visualized and their kinetic energy changed. To analyze the motion of particles, the functions of their dynamic entropy of the first intersection were constructed and the region of particle localization and the fractal dimension of their trajectories were found. The results obtained indicate a significant difference between colloids of different types, as well as the evolution of their motion with a change in kinetic energy. It is shown that the fractal dimension of the trajectories of all types of particles is fractional and decreases with an increase in their kinetic energy. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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