Measurement of net electric charge and dipole moment of dust aggregates in a complex plasma

Raziyeh Yousefi, Allen B. Davis, Jorge Carmona-Reyes, Lorin S. Matthews, Truell W. Hyde

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Understanding the agglomeration of dust particles in complex plasmas requires knowledge of basic properties such as the net electrostatic charge and dipole moment of the dust. In this study, dust aggregates are formed from gold-coated mono-disperse spherical melamine-formaldehyde monomers in a radiofrequency (rf) argon discharge plasma. The behavior of observed dust aggregates is analyzed both by studying the particle trajectories and by employing computer models examining three-dimensional structures of aggregates and their interactions and rotations as induced by torques arising from their dipole moments. These allow the basic characteristics of the dust aggregates, such as the electrostatic charge and dipole moment, as well as the external electric field, to be determined. It is shown that the experimental results support the predicted values from computer models for aggregates in these environments.

Original languageEnglish (US)
Article number033101
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume90
Issue number3
DOIs
StatePublished - Sep 2 2014
Externally publishedYes

Fingerprint

electric charge
Dust
Dipole
dipole moments
Plasma
dust
Charge
Moment
moments
electrostatic charge
Computer Model
Static Electricity
Computer Simulation
Electrostatics
melamine
Particle Trajectory
Agglomeration
particle trajectories
Argon
Torque

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Medicine(all)

Cite this

Measurement of net electric charge and dipole moment of dust aggregates in a complex plasma. / Yousefi, Raziyeh; Davis, Allen B.; Carmona-Reyes, Jorge; Matthews, Lorin S.; Hyde, Truell W.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 90, No. 3, 033101, 02.09.2014.

Research output: Contribution to journalArticle

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