Spinning electric dipole model of ball lightning

1993 ◽  
Vol 140 (6) ◽  
pp. 474 ◽  
Author(s):  
V.G. Endean
Keyword(s):  
Electric Dipole ◽  
Ball Lightning ◽  
Dipole Model

Source localization of averaged and single EEG spikes using the electric dipole model

1995 ◽  
Vol 17 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Shinn-Yih Tseng ◽  
Fok-Ching Chong ◽  
Rong-Chi Chen ◽  
Te-Son Kuo
Keyword(s):  
Source Localization ◽  
Electric Dipole ◽  
Dipole Model

scholarly journals An Effective Electric Dipole Model for Voltage-induced Gating Mechanism of Lysenin

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Radwan Al Faouri ◽  
Eric Krueger ◽  
Vivek Govind Kumar ◽  
Daniel Fologea ◽  
David Straub ◽  
...  
Keyword(s):  
Electric Dipole ◽  
Dipole Model ◽  
Gating Mechanism

Using the electric dipole model for localizing the EEG Spike Foci

1995 ◽  
Vol 18 (3) ◽  
pp. 313-319
Author(s):  
Shinn‐Yih Tseng ◽  
Fok‐Ching Chong ◽  
Rong‐Chi Chen ◽  
Te‐Son Kuo
Keyword(s):  
Electric Dipole ◽  
Dipole Model

scholarly journals Optically pumped magnetometers disclose magnetic field components of the muscular action potential.

2020 ◽  
Author(s):  
Philip Broser ◽  
Thomas Middelmann ◽  
Davide Sometti ◽  
Christoph Braun
Keyword(s):  
Magnetic Field ◽  
Action Potential ◽  
Electric Dipole ◽  
Temporal Dynamics ◽  
Signal Transduction Pathway ◽  
Electric Activity ◽  
Dipole Model ◽  
Dipole Source ◽  
Optically Pumped ◽  
The Magnetic Field

Aim: To track the magnetic field generated by the propagating muscle action potential (MAP). Method: In this prospective, proof of principle study, the magnetic activity of the intrinsic foot muscle after electric stimulation of the tibial nerve was measured using optically pumped magnetometers (OPMs). A classical biophysical electric dipole model of the propagating MAP was implemented to model the source of the data. Results: The signal profile generated by the activity of the intrinsic foot muscles was measured by four OPM devices. Three devices were located above the same muscle to compare the direction and the strength of the magnetic signal while propagating along the muscle. Interpretation: OPM devices allow for a new, non-invasive way to study MAP patterns. Since magnetic fields are less altered by the tissue surrounding the dipole source compared to electric activity, a precise analysis of the spatial characteristics and temporal dynamics of the MAP is possible. The classic electric dipole model explains major but not all aspects of the magnetic field. The field has longitudinal components generated by intrinsic structures of the muscle fibre. By understanding these magnetic components, new methods could be developed to analyse the muscular signal transduction pathway in greater detail.

Electric Dipole Model and Computer Simulation of the Fracture Behavior of a Conductive Crack in a Dielectric Material

2004 ◽  
Vol 855 ◽  
Author(s):  
Tianhong Wang ◽  
Xiaosheng Gao
Keyword(s):  
Fracture Toughness ◽  
Lead Zirconate Titanate ◽  
Electric Dipole ◽  
Fracture Behavior ◽  
Domain Switching ◽  
Dielectric Material ◽  
Dipole Model ◽  
Ferroelectric Ceramics ◽  
Mechanical Fracture ◽  
Microstructural Modeling

ABSTRACTFracture tests on poled and depoled lead zirconate titanate (PZT) ceramics indicate that purely electric fields are able to propagate the conductive cracks (notches) and fracture the samples. To understand the fracture behavior of conducting cracks in ferroelectric ceramics, an electric dipole model is proposed, in which a discrete electric dipole is used to represent the local spontaneous polarization and the force couples are used to represent the local strains. The electric dipole model provides basic solutions for microstructural modeling. The microstructural modeling is based on a domain switching mechanism. The domain structure is simulated with a grid of points where polarizations and strains vary with the applied loads. As a first step study, the microstructural modeling is conducted for a dielectric material with a conductive crack. The simulation result explains why the electric fracture toughness is much higher than the mechanical fracture toughness.

A New Defect in Polyethylene Single Crystals

1973 ◽  
Vol 31 ◽  
pp. 70-71
Author(s):  
E. L. Thomas ◽  
S. L. Sass
Keyword(s):  
Single Crystals ◽  
Screw Dislocation ◽  
Small Distance ◽  
Dipole Model ◽  
Dislocation Dipole ◽  
Chain Folding ◽  
Black And White ◽  
Polymer Crystal ◽  
Different Types

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.

Electric dipole and quadrupole moment and dipole polarizability of CS, SiO and SiS

2000 ◽  
Vol 98 (8) ◽  
pp. 481-491 ◽  
Author(s):  
George Maroulis, Constantinos Makris, Deme
Keyword(s):  
Quadrupole Moment ◽  
Electric Dipole ◽  
Dipole Polarizability
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