Results 221 to 230 of about 201,100 (277)

Nonlinear electric conductivity of point contacts in the multiphonon generation regime

Soviet Journal of Low Temperature Physics, 1988
The electron-phonon relaxation of the transport current in point contacts of conductors with a large value of the parameter eV/εF is studied theoretically (here, eV is the bias voltage at the contact, and εf is the Fermi energy of the current carriers ...
I. Itskovich, R. I. Shekhter, I. O. Kulik   +2 more
semanticscholar   +1 more source

Nonlinear Conductivity of SiC/Epoxy Resin Composites Dependent on Electric-Field at Cryogenic Temperature

IEEE International Conference on Applied Superconductivity and Electromagnetic Devices, 2020
Nonlinear conductive composite insulation has been widely used to uniform the local high electric field of high-voltage direct-current (HVDC) equipment.
Boxue Du
exaly   +2 more sources

Combined geometrical techniques and applying nonlinear field dependent conductivity layers to address the high electric field stress issue in high voltage high-density wide bandgap power modules

IEEE transactions on dielectrics and electrical insulation, 2020
Wide bandgap (WBG) power modules made from materials such as SiC and GaN (and soon Ga2O3 and diamond), which can tolerate higher voltages and currents than Si-based modules, are the most promising solution for reducing the size and weight of power ...
M. Tousi, M. Ghassemi
semanticscholar   +1 more source

Nonlinear electrical conductivity for a strongly coupled plasma

The Physics of Fluids, 1987
A nonlinear analysis of electrical conductivity in a plasma is given, stemming from the Uehling–Uhlenbeck equation. Anisotropy due to an applied electric field is incorporated through a Legendre polynomial expansion of the distribution function. The plasma is comprised of ions, electrons, and a neutral component.
Schenter, Gregory K., Liboff, Richard L.
openaire   +2 more sources

Characterization of Nonlinear Field-Dependent Conductivity Layer Coupled With Protruding Substrate to Address High Electric Field Issue Within High-Voltage High-Density Wide Bandgap Power Modules

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020
In addition to higher blocking voltages of wide bandgap (WBG) power modules, their volume has been targeted to be several times smaller than that of Si-based modules.
M. Tousi, M. Ghassemi
semanticscholar   +1 more source

Preserved Symmetries in Nonlinear Electric Conduction

AIP Conference Proceedings, 2005
For the general case of a mesoscopic, two‐terminal device with no geometrical symmetry, conductance symmetries break down in the non‐linear regime. Using basic symmetry arguments, we predict and experimentally confirm a set of symmetry relations that are preserved for electric conductors with respect to bias voltage, V, and B in the non‐linear regime.
openaire   +1 more source

Microscopic analysis of relaxation behavior in nonlinear optical conductivity of graphene

Physica Scripta, 2023
We produce a general formalism to study the interband dynamical optical conductivity in the nonlinear regime of graphene in the presence of a quantum bath comprising phonons and electrons.
Bristi Ghosh, S. Dattagupta, M. Bandyopadhyay   +2 more
semanticscholar   +1 more source

Conductivity Modulation of Gold Thin Film at Room Temperature via All-Solid-State Electric-Double-Layer Gating Accelerated by Nonlinear Ionic Transport

ACS Applied Materials & Interfaces, 2017
Tetsuya Asano, Yukihiro Kaneko, Atsushi Omote   +2 more
exaly   +2 more sources

Electric Field Mitigation in (U)WBG Power Module Using Nonlinear Field-Dependent Conductivity Layer and Protruding Substrate Under High-Frequency, High-Slew-Rate Square Wave Voltages

IEEE transactions on dielectrics and electrical insulation
Incorporating nonlinear resistive field grading materials (FGMs) onto metal-brazed substrates has been widely investigated as an efficient electric field reduction strategy at triple points (TPs) within ultrawide bandgap [(U)WBG] power modules.
Pujan Adhikari, M. Ghassemi
semanticscholar   +1 more source

Enhanced field-dependent conductivity and material properties of nano-AlN/micro-SiC/silicone elastomer hybrid composites for electric stress mitigation in high-voltage power modules

Nanotechnology, 2022
This paper reports an enhancement of the nonlinear conductivity, thermal and mechanical properties of micro-silicon carbide/silicone elastomer (m-SiC/SE) composites by adding nano-aluminum nitride (n-AlN) for power module encapsulation applications.
Qilong Wang, Xiangrong Chen, Xiaofan Huang, Awais Muhammad, A. Paramane, Na Ren   +5 more
semanticscholar   +1 more source