Results 31 to 40 of about 460,066 (283)

Macroion solutions in the cell model studied by field theory and Monte Carlo simulations [PDF]

, 2011
Aqueous solutions of charged spherical macroions with variable dielectric permittivity and their associated counterions are examined within the cell model using a field theory and Monte Carlo simulations. The field theory is based on separation of fields
Linse, Per, Lue, Leo
core   +1 more source

3-dimensional computer model of electrospinning multicapillary unit used for electrostatic field analysis

Open Physics, 2017
Electrospinning is an experimental method of the polymer super thin fibres formation using the electrostatic field. The distribution of electrostatic field affects the effectiveness of the electrospinning.
Firych-Nowacka Anna, Smółka Krzysztof, Wiak Sławomir, Gliścińska Eulalia, Krucińska Izabella, Chrzanowski Michał   +5 more
doaj   +1 more source

Simulation of Electron Density Disturbance in the Lower Ionosphere Caused by Thundercloud Electrostatic Fields

Atmosphere, 2023
In this study, we simulated the electron density disturbance at night in the bottom of the ionosphere caused by the electrostatic field in a thundercloud. The simulation was conducted using the charge of the thundercloud as the source, by incorporating a
Xubo Yang, Yi Liu, Youzhi Lin, Chen Zhou, Zhengyu Zhao   +4 more
doaj   +1 more source

Physics of collisionless shocks - theory and simulation [PDF]

, 2015
Collisionless shocks occur in various fields of physics. In the context of space and astrophysics they have been investigated for many decades. However, a thorough understanding of shock formation and particle acceleration is still missing. Collisionless
Bret, A., Fonseca, R. A., Novo, A. Stockem, Silva, L. O.   +3 more
core   +2 more sources

DETERMINATION OF THE EFFECTIVE PERMITTIVITY OF A HETEROGENEOUS MATERIAL

Electrical engineering & Electromechanics, 2020
Purpose. To develop a two-dimensional numerical-field model for determining the effective permittivity of a multicomponent material represented by a system of homogeneous volumes with known physical characteristics. Methodology. The model is based on the
O. O. Palchykov
doaj   +1 more source

Excitons in Electrostatic Traps

, 2005
We consider in-plane electrostatic traps for indirect excitons in coupled quantum wells, where the traps are formed by a laterally modulated gate voltage.
A. C. Gossard, A. T. Hammack, Beer G., G. O. Andreev, L. V. Butov, M. Hanson, N. A. Gippius, Sen Yang   +7 more
core   +1 more source

Azimuthal electric field in a static rotationally symmetric (2+1)-dimensional spacetime [PDF]

, 2002
The fundamental metrics, which describe any static three-dimensional Einstein-Maxwell spacetime (depending only on a unique spacelike coordinate), are found.
Bañados, Bonnor, Cataldo, Cataldo, Chan, Clément, Clément, Clément, Clément, Dias, Dias, Fernando, Giddings, Gott, Gott, Hirschmann, Horowitz, Kamata, Kamata, Kottler, Lemos, Martı́nez, Mauricio Cataldo, Melvin, Wald   +24 more
core   +2 more sources

Electric field generation by the electron beam filamentation instability: Filament size effects

, 2009
The filamentation instability (FI) of counter-propagating beams of electrons is modelled with a particle-in-cell simulation in one spatial dimension and with a high statistical plasma representation.
A Bret, Dieckmann M E, Dieckmann M E, M E Dieckmann, Medvedev M V, Medvedev MV, Petri J, Rowlands G, Stockem A   +8 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Fictitious Magnetic Resonance by Quasi-Electrostatic Field

, 2008
We propose a new kind of spin manipulation method using a {\it fictitious} magnetic field generated by a quasi-electrostatic field. The method can be applicable to every atom with electron spins and has distinct advantages of small photon scattering rate
A. Fioretti, A. Widera, C. Cohen-Tannoudji, D. Suter, J. Kobayashi, J. Kobayashi, J.J. Sakurai, K. Shibata, K.M. O’Hara, M. Kumakura, M. Rosatzin, M. Zielonkowski, M.P. Barrett, R. Grimm, S. Friebel, T. Aoki, T. Takekoshi, T. Takekoshi, T. Weber, Y. Takahashi   +19 more
core   +2 more sources