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Title: Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths

Abstract

The long-time diffusion of two-dimensional dusty plasmas on a one-dimensional periodic substrate with varying widths is investigated using Langevin dynamical simulations. When the substrate is narrow and the dust particles form a single row, the diffusion is the smallest in both directions. In this study, we find that as the substrate width gradually increases to twice its initial value, the long-time diffusion of the two-dimensional dusty plasmas first increases, then decreases, and finally increases again, giving an oscillation-like diffusion with varying substrate widths. When the width increases to a specific value, the dust particles within each potential well arrange themselves in a stable zigzag pattern, greatly reducing the diffusion and leading to the observed oscillation in the diffusion with the increase in the width. In addition, the long-time oscillation-like diffusion is consistent with the number of dust particles that are hopping across the potential wells of the substrate.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [3]; ORCiD logo [4]
  1. Soochow Univ., Suzhou (China). Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
  3. Michigan State Univ., East Lansing, MI (United States). Dept. of Computational Mathematics, Science and Engineering
  4. Soochow Univ., Suzhou (China). Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology; Nanjing Univ. (China). National Lab. of Solid State Microstructures
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1650641
Alternate Identifier(s):
OSTI ID: 1602588
Report Number(s):
LA-UR-20-20139
Journal ID: ISSN 1070-664X; TRN: US2202939
Grant/Contract Number:  
89233218CNA000001; 11875199; 11505124
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 27; Journal Issue: 3; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; structural analysis; Langevin dynamics; computer simulation; diffusion; stochastic processes; potential energy barrier; material science

Citation Formats

Li, W, Reichhardt, Charles, Reichhardt, Cynthia Jane O., Murillo, M. S., and Feng, Yan. Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths. United States: N. p., 2020. Web. doi:10.1063/1.5144658.
Li, W, Reichhardt, Charles, Reichhardt, Cynthia Jane O., Murillo, M. S., & Feng, Yan. Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths. United States. https://doi.org/10.1063/1.5144658
Li, W, Reichhardt, Charles, Reichhardt, Cynthia Jane O., Murillo, M. S., and Feng, Yan. Tue . "Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths". United States. https://doi.org/10.1063/1.5144658. https://www.osti.gov/servlets/purl/1650641.
@article{osti_1650641,
title = {Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths},
author = {Li, W and Reichhardt, Charles and Reichhardt, Cynthia Jane O. and Murillo, M. S. and Feng, Yan},
abstractNote = {The long-time diffusion of two-dimensional dusty plasmas on a one-dimensional periodic substrate with varying widths is investigated using Langevin dynamical simulations. When the substrate is narrow and the dust particles form a single row, the diffusion is the smallest in both directions. In this study, we find that as the substrate width gradually increases to twice its initial value, the long-time diffusion of the two-dimensional dusty plasmas first increases, then decreases, and finally increases again, giving an oscillation-like diffusion with varying substrate widths. When the width increases to a specific value, the dust particles within each potential well arrange themselves in a stable zigzag pattern, greatly reducing the diffusion and leading to the observed oscillation in the diffusion with the increase in the width. In addition, the long-time oscillation-like diffusion is consistent with the number of dust particles that are hopping across the potential wells of the substrate.},
doi = {10.1063/1.5144658},
journal = {Physics of Plasmas},
number = 3,
volume = 27,
place = {United States},
year = {Tue Mar 03 00:00:00 EST 2020},
month = {Tue Mar 03 00:00:00 EST 2020}
}

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