نتایج جستجو برای: high electric field

تعداد نتایج: 2779783  

روحانی, شاهین, سربلوکی, محمدنبی, فاطمی, آروین, ملکی‌جیرسرایی, ناهید,

We considered the motion of DNA molecules through a hexagonal array under uniform electric fields as a Fokker-Planck process which is affected by the entropic barriers and we have simulated this motion by computer. We solved the Fokker-Planck equation with numerical simulation of the Brownian dynamics by the Euler method. For different DNA molecules, under different physical conditions, the mea...

The Coulomb force applied by an electric field on any charge present in a dielectric liquid may cause fluid motion. At high applied electric fields in an insulating liquid, electric charge carriers are created at metallic/liquid interfaces, a process referred to as ion injection, and result from electrochemical reactions. In this article we deals with the problem of electro thermal convection i...

2014

The discussion of electric fields has ignored the influence of matter on the  field except for the discussion of  fields in electric conductors. The behavior of matter in electric fields can greatly influence the  field as shown for the case of a good conductor. The response of matter to an electric field falls into two main categories, polarization of bound charges in atoms or molecules, an...

2016
M. Nagasawa T. Sambongi K. Nomura H. Anzai K. NOMURA

Transient voltage oscillation was observed in the spin-density wave phase of (TMTSF)2AsFs. Its frequency is proportional to the non-ohmic current. In high electric field, current-field relation becomes irregular and transient oscillation diminishes. The bistability of the density-wave conductivity proposed by Littlewood is likely to be realized.

Journal: :Physical review letters 2014
Gary Wolfowicz Matias Urdampilleta Mike L W Thewalt Helge Riemann Nikolai V Abrosimov Peter Becker Hans-Joachim Pohl John J L Morton

Electric fields can be used to tune donor spins in silicon using the Stark shift, whereby the donor electron wave function is displaced by an electric field, modifying the hyperfine coupling between the electron spin and the donor nuclear spin. We present a technique based on dynamic decoupling of the electron spin to accurately determine the Stark shift, and illustrate this using antimony dono...

A Ghorbanpour Arani, A Loghman, A.A Mosallaie Barzoki R Kolahchi

Time-dependent creep analysis is crucial for the performance and reliability of piezoactuators used for high-precision positioning and load-bearing applications. In this study history of stresses, deformations and electric potential of hollow rotating cylinders made of functionally graded piezoelectric material (FGPM), e.g., PZT_7A have been investigated using Mendelson’s method of successive e...

In this study, spectroscopic properties of the single-walled boron-nitride nanotube (SWBNNT) –a semiconductor channel in molecular diodes and molecular transistors–have been investigated under field-free and various applied electric fields by first principle methods.Our analysis shows that increasing the electric field in boron-nitride nanotube (BNNT) decreases the Highest Occupied Crystal Orbi...

Journal: :physical chemistry research 0
samira peymani ferdowsi university of mashhad mohammad izadyar ferdowsi university of mashhad ali nakhaeipour ferdowsi university of mashhad

in this study, kinetics and mechanism of the sulfur dioxide adsorption on the single-walled carbon nanotubes (cnt) are investigated. three single-walled carbon nanotubes, including the armchair (6,6), chiral (6,5) and zigzag (6,0) cnts were chosen as the models and the different orientations of so2 molecule relative to the cnt axis were considered. the b3lyp functional within the 6-31g(d) basis...

ابراهیمی, حسین , سلطان زاده, احمد , فلاحی, مجید , موسوی, سعید , گلمحمدی, رستم ,

Introduction: Electromagnetic field emitted by laptops are known as extremely low frequency (ELF) Waves. The aim of this study was to investigate the intensity of electric and magnetic field with extremely low frequency emitted by common laptops. . Material and Method: Intensity of electric and magnetic field were measured on four sides of 40 common by used laptop at the distance of 30, 60 and...

2008
R J. Prance

We describe the biological and medical applications of a new electric field sensor technology developed at Sussex. It provides an ultra-high impedance alternative to conventional low impedance Ag/AgCl electrodes used in electrophysiology and may even be used to acquire nuclear magnetic resonance signals via the electric field component of the free induction decay. Results are reported for both ...

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