Results 51 to 60 of about 209,920 (241)

Nonlinear terahertz metamaterials via field-enhanced carrier dynamics in GaAs

, 2012
We demonstrate nonlinear metamaterial split ring resonators (SRRs) on GaAs at terahertz frequencies. For SRRs on doped GaAs films, incident terahertz radiation with peak fields of ~20 - 160 kV/cm drives intervalley scattering.
Averitt, Richard D., Fan, Kebin, Hwang, Harold Y., Liu, Mengkun, Nelson, Keith A., Sternbach, Aaron, Strikwerda, Andrew C., Zhang, Jingdi, Zhang, Xin, Zhao, Xiaoguang   +9 more
core   +1 more source

A multiscattering series for impedance tomography in layered media [PDF]

, 1999
We introduce an inversion algorithm for tomographic images of layered media. The algorithm is based on a multiscattering series expansion of the Green function that, unlike the Born series, converges unconditionally.
Borcea, Liliana, Ortiz, Michael
core   +1 more source

Signature of the electron-electron interaction in the magnetic field dependence of nonlinear I-V characteristics in mesoscopic systems

, 2004
We show that the nonlinear I-V characteristics of mesoscopic samples with metallic conductivity should contain parts which are linear in the magnetic field and quadratic in the electric field.
A. Larkin, A. Larkin, A. Zyuzin, A. Zyuzin, A.Yu. Zyuzin, A. A. Abrikosov, B. Altshuler, B. Spivak, B. I. Sturman, B. L. Altshuler, L. D. Landau, V. Falko   +11 more
core   +1 more source

Nonlinear Electrical Conductance Triggered by Partial Discharge of Fluorinated Carbon Nanotube Clusters and Its Applications in Field Grading

Inorganics
Materials with nonlinear conductivity are promising for electric field grading in various electrical and electronic devices because of their self-adaptability.
Wei Zeng, Zhen Li, Yu Wang, Lei Cao, Lei Fu, Chao Wang   +5 more
doaj   +1 more source

Frequency- and electric-field-dependent conductivity of single-walled carbon nanotube networks of varying density

, 2008
We present measurements of the frequency and electric field dependent conductivity of single walled carbon nanotube(SWCNT) networks of various densities.
George Grüner, Hua Xu, Liangbing Hu, M. S. Dresselhaus, M. S. Fuhrer, P. M. Ajayan, Shixong Zhang, Steven M. Anlage   +7 more
core   +1 more source

DC assisted electric field on the improvement of the nonlinear electrical conductivity of SiC/LDPE field grading composites

Journal of Physics D: Applied Physics
Nonlinear resistive field grading material presents nonlinear electrical conductivity, and self-homogenizes the electric field distribution. The nonlinear conductivity is closely associated to the filler distribution, which can be modulated by the ...
Yongsen Han, Jie Chen, Hang Yin, Xinyu Wang, Huan Zheng, Yunlong Sun, Zhonghua Li   +6 more
semanticscholar   +1 more source

Role of Solution Conductivity in Reaction Induced Charge Auto-Electrophoresis

, 2013
Catalytic bimetallic Janus particles swim by a bipolar electrochemical propulsion mechanism that results from electroosmotic fluid slip around the particle surface.
Moran, Jeffrey L., Posner, Jonathan D.
core   +1 more source

Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity [PDF]

Nonlinear Processes in Geophysics, 2000
The ion dynamics in the distant Earth's magnetotail is studied in the case that a cross tail electric field and reconnection parity magnetic turbulence are present in the neutral sheet. A test particle simulation is performed for the ions, and moments of
A. Greco, A. Greco, P. Veltri, P. Veltri, G. Zimbardo, G. Zimbardo, A. L. Taktakishvilli, L. M. Zelenyi   +7 more
doaj  

Empirical Conductivity Equation for the Simulation of the Stationary Space Charge Distribution in Polymeric HVDC Cable Insulations

Energies, 2019
Many processes are involved in the accumulation of space charges within the insulation materials of high voltage direct current (HVDC) cables, e.g., the local electric field, a conductivity gradient inside the insulation, and the injection of charges at ...
Christoph Jörgens, Markus Clemens
doaj   +1 more source

Nonlinear Electrical Conductivity Properties of Au Films Prepared by Sputtering [PDF]

Journal of Nanomaterials, 2014
Metal‐based films with tunable electrical conductivity have played an important role in developing new types of electric devices for future application. In this work, a sputtering method was used to obtain Au films on silicon substrate in a hypobaric atmosphere.
Qingyun Meng, Yixin Kang, Xiaoyu Zhai, Ziwen Yin, Dongpeng Yan   +4 more
openaire   +1 more source