Now showing items 1-20 of 85

    • Detailed model of the growth of fluffy dust aggregates in a protoplanetary disk: Effects of nebular conditions 

      Xiang, C.; Carballido, A.; Matthews, L.S.; Hyde, T.W. (AAS Publishing, 2020-07)
      Coagulation of dust aggregates plays an important role in the formation of planets and is of key importance to the evolution of protoplanetary disks (PPDs). Characteristics of dust, such as the diversity of particle size, ...
    • Dust charging in dynamic ion wakes 

      Matthews, L.S.; Sanford, D. L.; Kostadinova, E.; Ashrafi, K.S.; Guay, E.; Hyde, T. W. (AIP Publishing, 2020-02-14)
      A molecular dynamics simulation of ion flow past dust grains is used to investigate the interaction between a pair of charged dust particles and streaming ions. The charging and dynamics of the grains are coupled and derived ...
    • Nonlinear mode coupling and internal resonance observed in a dusty plasma 

      Ding, Zhiyue; Qiao, Ke; Ernst, N.; Kong, Jie; Chen, M.; Matthews, L.S.; Hyde, T. W. (New Journal of Physics, 209-10)
      In this paper, we report the first experimental observation of internal resonance in a dusty plasma, which shows the intrinsic nonlinearities of dust interactions in plasmas. When driving a system of vertically aligned ...
    • Dust particle pair correlation functions and the non-linear effect of interaction potentials 

      Kong, Jie; Qiao, Ke; Matthews, L.S.; Hyde, T.W. (IEEE Transactions on Plasma Science, 2019-07)
      Dust temperature is a measure of the energy of the stochastic motion of a dust particle, and is a result of the combination of the Brownian motion and the fluctuations in the dust charge and confining electric field. A ...
    • Initial Development and Validation of the Elementary Student Engagement Survey (ESES) 

      Carmona Reyes, Jorge; Attai, Shanna; Davis, John; York, Judy; Ranney, Kerri; Hyde, Truell W. (2020-03-16)
      Student engagement has been researched from multiple perspectives in the literature due to its impact on academic attainment and other variables of interest. However, most of the research has focused on grades above ...
    • Transforming teacher pedagogy to maximize 21st century skills through the learning environment 

      Attai, Shanna L., 1987-; Carmona Reyes, Jorge; Davis, John; York, Judy; Ranney, Kerri; Ratliff, Lauren; Hyde, Truell (2020-01-24)
      As schools redesign learning environments and equip classrooms with flexible furniture, it is imperative to examine this impact on teacher pedagogy and student learning. We investigated if classrooms equipped with flexible ...
    • Investigating the Impact of Flexible Furniture in the elementary Classroom 

      Attai, Shanna L., 1987-; Carmona Reyes, Jorge; Davis, John; York, Judy; Ranney, Kerri; Hyde, Truell (2020-01-24)
      Educators are beginning to consider the physical learning environment as an additional resource to meet the learning outcomes in modern classrooms. In order to better utilize classroom space, schools have begun to eliminate ...
    • Initial Development and Validation of the Student Engagement for Students for Flexible Learning Environments (STUD-E Sflex) Assessment for Effective Intervention 

      Carmona Reyes, Jorge; York, Judy; Attai, Shanna L., 1987-; Ranney, Kerri; Davis, John; Howell, Leanne; Altmann, Rob; Hyde, Truell Wayne. (2020-01-10)
      Student engagement has been researched from multiple perspectives due to its impact on academic skill attainment. However, most of this research has focused on grades above elementary school, leaving a gap in student ...
    • Comparison of Plasma Magnetic Field Interactions in a Static and Dynamic Plasma Facility 

      Dropmann, Michael; Knapp, A.; Eichhorn, C.; Loehle, S.; Laufer, Rene; Herdrich, Georg; Matthews, Lorin Swint.; Hyde, Truell Wayne.; Fasoulas, Stefanos; Roeser, Hans-Peter (Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 2016)
      Magnetic fields are a principal/widespread/promising tool/instrument in space technology design for the use in advanced propulsion concepts, shielding from radiation or to aid thermal protection during the atmospheric ...
    • Dust particle pair correlation functions and the non-linear effect of interaction potentials 

      Kong, Jie; Qiao, Ke; Matthews, Lorin Swint.; Hyde, Truell Wayne. (IEEE Transactions on Plasma Science, 2019-07)
      Dust kinetic temperature is a measure of the energy of the stochastic motion of a dust particle and is a result of the combination of the Brownian motion and the fluctuations in the dust charge and confining electric field. ...
    • Nonlinear response of vertical paired structure in complex plasma 

      Ding, Zhiyue; Qiao, Ke; Kong, Jie; Matthews, Lorin Swint.; Hyde, Truell Wayne. (Plasma Physics and Controlled Fusion, 2019-03-21)
      The effect of the ion wake downstream of grains immersed in a flowing plasma is observed experimentally through the apparent non-reciprocal grain–grain interactions. Here we extend amplitude-frequency response analysis to ...
    • Mapping the Plasma Potential in a Glass Box 

      Scott, Lori; Ellis, Naoki; Chen, Mudi; Matthews, Lorin Swint.; Hyde, Truell Wayne. (IEEE Transactions on Plasma Science, 2019-07)
      Modeling the dynamics of charged dust particles, confined in a glass box placed on the lower electrode of a Gaseous Electronics Conference cell, requires that the interactions between the charged dust, plasma, and boundaries ...
    • Spectral approach to transport in the two-dimensional honeycomb lattice with substitutional disorder 

      Kostadinova, Eva Georgieva, 1992-; Liaw, C. D.; Hering, Amanda S.; Cameron, Adam; Guyton, Forrest.; Matthews, Lorin Swint.; Hyde, Truell Wayne. (Physical Review B, 2019-01)
      The transport properties of a disordered two-dimensional (2D) honeycomb lattice are examined numerically using the spectral approach to the 2D percolation problem, characterized by an Anderson-type Hamiltonian. In our ...
    • Self-diffusion in two-dimensional quasi-magnetized rotating dusty plasmas 

      Hartmann, Peter; Reyes, J. C.; Kostadinova, Eva Georgieva, 1992-; Matthews, Lorin Swint.; Hyde, Truell Wayne.; Dzhumagulova, K. N.; Masheyeva, R. U.; Ramazanov, T. S.; Ott, T.; kahlert, H.; Bonitz, M.; Korolov, I.; Donko, Zoltan (Physical Review E, 2019-01-10)
      The self-diffusion phenomenon in a two-dimensional dusty plasma at extremely strong (effective) magnetic fields is studied experimentally and by means of molecular dynamics simulations. In the experiment the high magnetic ...
    • The initial structure of chondrule dust rims I: electrically neutral grains 

      Xiang, Chuchu (Icarus, 2019-03)
      In order to characterize the early growth of fine-grained dust rims (FGRs) that commonly surround chondrules in carbonaceous chondrites, we perform numerical simulations of dust accretion onto chondrule surfaces. We employ ...
    • Discrete stochastic charging of aggregate grains 

      Matthews, Lorin Swint.; Shotorban, Babak; Hyde, Truell Wayne. (Physical Review E, 2018-05)
      Dust particles immersed in a plasma environment become charged through the collection of electrons and ions at random times, causing the dust charge to fluctuate about an equilibrium value. Small grains (with radii less ...
    • Transport properties of disordered 2D complex plasma crystal 

      Kostadinova, Eva Georgieva, 1992-; Guyton, Forrest.; Cameron, Adam; Busse, Kyle; Liaw, Constanze.; Matthews, Lorin Swint.; Hyde, Truell Wayne. (Contributions to Plasma Physics, 2018-01)
      In this work, we investigate numerically the transport properties of a 2D complex plasma crystal using diffusion of coplanar dust lattice waves. In the limit where the Hamiltonian interactions can be decoupled from the ...
    • The magnetic field inside a protoplanetary disk gap opened by planets of different masses 

      Carballido, Augusto; Matthews, Lorin; Hyde, Truell W. (Monthly Notices of the Royal Astronomical Society, 2017)
      We perform magnetohydrodynamic simulations of protoplanetary disc gaps opened by planets of various masses, with the aim of calculating the strength of the vertical magnetic field threading such gaps. We introduce a ...
    • Delocalization in infinite disordered two-dimensional lattices of different geometry 

      Kostadinova, Eva; Busse, Kyle; Ellis, Naoki; Padgett, Josh; Liaw, Constanze; Matthews, Lorin S.; Hyde, Truell W. (Physical Review B, 2017-12-06)
      The spectral approach to infinite disordered crystals is applied to anAnderson-type Hamiltonian to demonstrate the existence of extended states for nonzero disorder in 2D lattices of different geometries. The numerical ...
    • Simple experiment on the sputtering rate of solids in gas discharges 

      Hartmann, Peter; Carmona-Reyes, Jorge; Korolov, I.; Matthews, Lorin S.; Hyde, Truell W. (Physics of Plasmas, 2017-06)
      We present a very simple and sensitive method to measure the sputtering rate of solid materials in stationary low-pressure gas discharges. The method is based on the balance of the centrifugal force and the confinement ...