Now showing items 1-5 of 5

    • Jamming for a 2D granular material 

      Zhang, J; Majmudar, TS; Sperl, M; Behringer, RP (Soft Matter, 2010-07-07)
      This paper focuses on the nature of jamming, as seen in two-dimensional frictional granular systems consisting of photoelastic particles. The photoelastic technique is unique at this time, in its capability to provide detailed ...
    • Magnetic superlens-enhanced inductive coupling for wireless power transfer 

      Huang, D; Urzhumov, Y; Smith, DR; Hoo Teo, K; Zhang, J (Journal of Applied Physics, 2012-03-15)
      We investigate numerically the use of a negative-permeability perfect lens for enhancing wireless power transfer between two current carrying coils. The negative permeability slab serves to focus the flux generated in the ...
    • Serum cholesterol levels within the high normal range are associated with better cognitive performance among Chinese elderly 

      Lv, Y-B; Yin, ZX; Chei, C-L; Brasher, MS; Zhang, J; Kraus, VB; Qian, F; ... (10 authors) (Journal of Nutrition, Health and Aging, 2016-03-01)
      © 2016, Serdi and Springer-Verlag France.Objectives: The association between cognitive function and cholesterol levels is poorly understood and inconsistent results exist among the elderly. The purpose of this study is to ...
    • Stress correlations in granular materials: An entropic formulation 

      Lois, G; Zhang, J; Majmudar, TS; Henkes, S; Chakraborty, B; O'Hern, CS; Behringer, RP (Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2009-12-28)
      We study the response of dry granular materials to external stress using experiment, simulation, and theory. We derive a Ginzburg-Landau functional that enforces mechanical stability and positivity of contact forces. In ...
    • Structural templates of disordered granular media 

      Walker, DM; Tordesillas, A; Zhang, J; Behringer, RP; Andò, E; Viggiani, G; Druckrey, A; ... (8 authors) (International Journal of Solids and Structures, 2015-01-01)
      © 2014 Elsevier Ltd. All rights reserved.Granular materials, in common with many complex systems, exhibit a range of self-organization processes that control their mechanical performance. Many of these processes directly ...