Now showing items 46-57 of 57

    • Phase Transitions in a Dusty Plasma with Two Distinct Particle Sizes 

      Smith, Bernard; Hyde, Truell; Matthews, Lorin; Reay, Jerry; Cook, Mike; Schmoke, Jimmy (Advances in Space Research, 2008)
      In semiconductor manufacturing, contamination due to particulates significantly decreases the yield and quality of device fabrication, therefore increasing the cost of production. Dust particle clouds can be found in almost ...
    • Photophoresis on polydisperse basalt microparticles under microgravity 

      Kupper, M.; de Beule, C.; Wurm, G.; Matthews, L.; Kimery, J.; Hyde, T.W. (Journal of Aerosol Science, 2014-10)
      Photophoresis is a force which can dominate the motion of illuminated aerosols in low pressure environments of laboratory experiments, planetary atmospheres or protoplanetary disks. In drop tower experiments we quantified ...
    • Photophoretic Force on Aggregate Grains, Monthly Notices of the Royal Astronomical Society 

      Matthews, Lorin; Kimery, J. B.; Wurm, G.; de Beule, C.; Kuepper, M; Hyde, T. W. (Monthly Notices of the Royal Astronomical Society, 2016-01-21)
      The photophoretic force may impact planetary formation by selectively moving solid particles based on their composition and structure. This generates collision velocities between grains of different sizes and sorts the ...
    • Probing the sheath electric field using thermophoresis in dusty plasma 

      Land, Victor; Smith, Bernie; Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2010-04)
      A self-consistent dusty plasma fluid model has been extended to incorporate all the oble gases as the carrier gas. An analysis of void closure in complex plasma composed of these gases over a wide range of experimental ...
    • A Simple Introduction to Particle Physics: Part II Geometric Foundations and Relativity 

      Robinson, Matthew; Ali, Tibra; Cleaver, Gerald (2010-07-09)
      This is the second in a series of papers intended to provide a basic overview of some of the major ideas in particle physics. Part I [40] was primarily an algebraic exposition of gauge theories. We developed the group ...
    • Simple method to measure the interaction potential of dielectric grains in a dusty plasma 

      Zhang, Zhuanhao; Qiao, Ke; Kong, Jie; Matthews, Lorin; Hyde, Truell (Physics Review E, 2010-09)
      A simple minimally perturbative method is introduced which provides the ability to experimentally measure both the radial confining potential and the interaction potential between two individual dust particles, levitated ...
    • Simulation of dust voids in complex plasmas 

      Goedheer, Jan Willem; Land, Victor (IOP Publishing, 2008-11-04)
      In dusty radio-frequency (RF) discharges under micro-gravity conditions often a void is observed, a dust free region in the discharge center. This void is generated by the drag of the positive ions pulled out of the ...
    • Slow Plastic Deformation (Creep) of 2D Dusty Plasma Solids 

      Hartmann, P.; Kovacs, A. Z.; Douglass, A. M.; Carmona-Reyes, J.; Matthews, L. S.; Hyde, T. W. (Physical Review Letters, 201-07-09)
      We report complex plasma experiments, assisted by numerical simulations, providing an alternative qualitative link between the macroscopic response of polycrystalline solid matter to small shearing forces and the possible ...
    • Two-dimensional and three-dimensional Coulomb clusters in parabolic traps 

      Myasnikov, M.; D'yachkov, L.; Petrov, O.; Hyde, T. W.; Kong., J.; Matthews, L. S. (AIP Publishing, 2014-09-08)
      We consider the shell structure of Coulomb clusters in an axially symmetric parabolic trap exhibiting a confining potential U_c(ρ,z)=(mω^2/2)(ρ^2+αz^2) . Assuming an anisotropic parameter α = 4 (corresponding to experiments ...
    • Vertical Interaction Between Dust Particles Confined in a Glass Box in a Complex Plasma 

      Kong, Jie; Qiao, Ke; Carmona-Reyes, Jorge; Douglass, Angela; Zhang, Zhuanhao; Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2013-04)
      In this experiment, falling particle trajectories within and without a glass box placed on the lower electrode in a Gaseous Electronics Conference reference cell are recorded and analyzed, and the electrostatic forces ...
    • Vertical probe-induced asymmetric dust oscillation in complex plasma 

      Harris, B. J.; Matthews, L.S.; Hyde, T. W. (Physical Review E, 2013-05-24)
      A complex plasma vertical oscillation experiment which modifies the bulk is presented. Spherical, micron-sized particles within a Coulomb crystal levitated in the sheath above the powered lower electrode in a GEC reference ...
    • Vibrational Modes and Instabilities of a Dust Particle Pair in a Complex Plasma 

      Qiao, Ke; Matthews, Lorin; Hyde, Truell (IEEE Transactions on Plasma Science, 2010-04-10)
      Vibrational modes and instabilities of a dust-particle pair in a terrestrial aboratory complex plasma are investigated by employing an analytical method whereby the plasma wakefield induced by an external electric field ...