Electric‐field‐induced polarization current studies in guest–host polymers

1994 ◽  
Vol 75 (3) ◽  
pp. 1267-1285 ◽  
Author(s):  
K. Zimmerman ◽  
F. Ghebremichael ◽  
M. G. Kuzyk ◽  
C. W. Dirk
Keyword(s):  
Electric Field ◽  
Induced Polarization ◽  
Polarization Current

Electric-Field-Induced Polarization Enhancement of Vinylidene Fluoride/Trifluoroethylene Copolymer Ultrathin Films

2011 ◽  
Vol 4 (7) ◽  
pp. 071501 ◽  
Author(s):  
Yuichiro Mabuchi ◽  
Takashi Nakajima ◽  
Takeo Furukawa ◽  
Soichiro Okamura
Keyword(s):  
Electric Field ◽  
Ultrathin Films ◽  
Vinylidene Fluoride ◽  
Induced Polarization

Mapping of induced polarization using natural fields

Geophysics ◽  
2001 ◽  
Vol 66 (1) ◽  
pp. 137-147 ◽  
Author(s):  
Erika Gasperikova ◽  
H. Frank Morrison
Keyword(s):  
Electric Field ◽  
Surrounding Medium ◽  
Low Frequency ◽  
Induced Polarization ◽  
The Body ◽  
Electromagnetic Response ◽  
Frequency Dependent ◽  
Finite Body ◽  
Electric Field Profile ◽  
Measured Response

The observed electromagnetic response of a finite body is caused by induction and polarization currents in the body and by the distortion of the induction currents in the surrounding medium. At a sufficiently low frequency, there is negligible induction and the measured response is that of the body distorting the background currents just as it would distort a direct current (dc). Because this dc response is not inherently frequency dependent, any observed change in response of the body for frequencies low enough to be in this dc limit must result from frequency‐dependent conductivity. Profiles of low‐frequency natural electric (telluric) fields have spatial anomalies over finite bodies of fixed conductivity that are independent of frequency and have no associated phase anomaly. If the body is polarizable, the electric field profile over the body becomes frequency dependent and phase shifted with respect to a reference field. The technique was tested on data acquired in a standard continuous profiling magnetotelluric (MT) survey over a strong induced polarization (IP) anomaly previously mapped with a conventional pole‐dipole IP survey. The extracted IP response appears in both the apparent resistivity and the normalized electric field profiles.

scholarly journals Abnormal Influence of Ions on Shock-Induced Polarization in Binary Electrolytes

2008 ◽  
Vol 45 (1) ◽  
pp. 63-70
Author(s):  
B. Martuzans ◽  
Yu. Skryl
Keyword(s):  
Mole Fraction ◽  
Induced Polarization ◽  
Small Concentration ◽  
High Conductivity ◽  
Polarization Current ◽  
Direct Contribution ◽  
Indirect Influence ◽  
Dissolved Ions ◽  
Dipole Polarization

Abnormal Influence of Ions on Shock-Induced Polarization in Binary ElectrolytesThe study is aimed at modeling the shock-induced polarization of liquid superdiluted binary (KF) electrolytes at low (<10-4mole fraction) concentration of K+and F-ions (i.e. not making direct contribution to the polarization current). It is supposed that at such a small concentration of electrolyte only the dipole polarization of water occurs, while the indirect influence of ions is expressed in its reduced conductivity in the compressed region at increasing concentration of the dissolved ions. In the authors' opinion, this influence is connected with suppression of the transition of water into high-conductivity phase by the ions of electrolyte.

scholarly journals Nonperturbative Kinetic Description of Electron-Hole Excitations in Graphene in a Time Dependent Electric Field of Arbitrary Polarization

Particles ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 208-230 ◽  
Author(s):  
Stanislav A. Smolyansky ◽  
Anatolii D. Panferov ◽  
David B. Blaschke ◽  
Narine T. Gevorgyan
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Kinetic Equations ◽  
Nonlinear Effects ◽  
Two Dimensions ◽  
Time Dependent ◽  
Polarization Current ◽  
Kinetic Description ◽  
Orthogonal Direction ◽  
Electron Hole

On the basis of the well-known kinetic description of e − e + vacuum pair creation in strong electromagnetic fields in D = 3 + 1 QED we construct a nonperturbative kinetic approach to electron-hole excitations in graphene under the action of strong, time-dependent electric fields. We start from the simplest model of low-energy excitations around the Dirac points in the Brillouin zone. The corresponding kinetic equations are analyzed by nonperturbative analytical and numerical methods that allow to avoid difficulties characteristic for the perturbation theory. We consider different models for external fields acting in both, one and two dimensions. In the latter case we discuss the nonlinear interaction of the orthogonal currents in graphene which plays the role of an active nonlinear medium. In particular, this allows to govern the current in one direction by means of the electric field acting in the orthogonal direction. Investigating the polarization current we detected the existence of high frequency damped oscillations in a constant external electric field. When the electric field is abruptly turned off residual inertial oscillations of the polarization current are obtained. Further nonlinear effects are discussed.

Effects of electric field induced polarization on dielectric tunability and pyroelectric coefficient

2017 ◽  
Vol 44 (4-6) ◽  
pp. 81-92 ◽  
Author(s):  
Rui K. Pan ◽  
Yang Li ◽  
Wan Q. Cao ◽  
Long H. Wang ◽  
Ya J. Qi ◽  
...  
Keyword(s):  
Electric Field ◽  
Induced Polarization ◽  
Pyroelectric Coefficient ◽  
Dielectric Tunability

Electric Field Induced Polarization Effects Measured by in Situ Neutron Spectroscopy

2017 ◽  
Vol 121 (42) ◽  
pp. 23582-23591 ◽  
Author(s):  
Rosanna Ignazzi ◽  
Will P. Gates ◽  
Souleymane O. Diallo ◽  
Dehong Yu ◽  
Fanni Juranyi ◽  
...  
Keyword(s):  
Electric Field ◽  
Induced Polarization ◽  
Neutron Spectroscopy ◽  
Polarization Effects
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