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242 results
  • Topology of configuration space of the mean-field ϕ^{4} model by Morse theory. [Journal Article]
    Phys Rev E 2019; 100(1-1):012124Baroni F
  • In this paper we present the study of the topology of the equipotential hypersurfaces of configuration space of the mean-field ϕ^{4} model with a Z_{2} symmetry. Our purpose is discovering, if any, the relation between the second-order Z_{2}-symmetry-breaking phase transition and the geometric entities mentioned above. The mean-field interaction allows us to solve analytically either the thermody…
  • Freely Flowing Currents and Electric Field Expulsion in Viscous Electronics. [Journal Article]
    Phys Rev Lett 2019; 123(2):026801Shavit M, Shytov A, Falkovich G
  • Electronic fluids bring into hydrodynamics a new setting: equipotential flow sources embedded inside the fluid. Here we show that the nonlocal relation between the current and electric field due to momentum-conserving interparticle collisions leads to a total or partial field expulsion from such flows. That results in freely flowing currents in the bulk and a boundary jump in the electric potenti…
  • Morphological organization of point-to-point transport in complex networks. [Journal Article]
    Sci Rep 2019; 9(1):8322Kang MY, Berthelot G, … Grebenkov DS
  • We investigate the structural organization of the point-to-point electric, diffusive or hydraulic transport in complex scale-free networks. The random choice of two nodes, a source and a drain, to which a potential difference is applied, selects two tree-like structures, one emerging from the source and the other converging to the drain. These trees merge into a large cluster of the remaining nod…
  • AC Electrowetting Modulation of Low-Volatile Liquids Probed by XPS: Dipolar vs Ionic Screening. [Journal Article]
    Langmuir 2019; 35(9):3319-3326Aydogan Gokturk P, Ulgut B, Suzer S
  • X-ray photoelectron spectroscopic (XPS) data have been recorded for a low-molecular-weight poly(ethylene glycol) microliter-sized sessile liquid drops sitting on a dielectric covered planar electrode while imposing a ±6 V square-wave actuation with varying frequencies between 10-1 and 105 Hz to tap into the information derivable from (AC) electrowetting. We show that this time-varying XPS spectra…
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