نتایج جستجو برای: electric current

تعداد نتایج: 897824  

In this paper, we proposed a 2-D analytical model for electrical characteristics such as surface potential, electric field and drain current of Silicon-on-Insulator Tunnel Field Effect Transistor (SOI TFETs) with a SiO2/High-k stacked gate-oxide structure. By using superposition principle with suitable boundary conditions, the Poisson’s equation has been solved to model the channel r...

Journal: :Physical review letters 2010
Junfeng Dai Hai-Zhou Lu C L Yang Shun-Qing Shen Fu-Chun Zhang Xiaodong Cui

We report the observation of magnetoelectric photocurrent generated via direct interband transitions in an InGaAs/InAlAs two-dimensional electron gas by a linearly polarized incident light. The electric current is proportional to the in-plane magnetic field, which unbalances the velocities of the photoexcited carriers with opposite spins and consequently generates the electric current from a hi...

2014
Tao Ding Wenjing Xuan Qiudong He Hao Wu Wei Xiong

A series of experiments on friction and wear properties of carbon strip rubbing against copper contact wire is performed on high-speed friction and wear tester with electric current. The results show that the friction coefficient is generally maintained between 0.24 and 0.37. In the absence of electric current, the coefficient of friction is higher than that in the presence of electric current....

2017
Arun Rao

Electrical Impedance Tomography (EIT) for prostate and breast cancer detection require wide-band ac current drivers which can deliver current up to 10MHz. The current drivers should exhibit low harmonic distortion and provide accurate current to the tissue being examined. This work presents an integrated current driver which can deliver 1.2mA of current up to frequencies of 10MHz. The current s...

ژورنال: مواد پرانرژی 2020

The electric initiator is an important component of the explosive train which provides requiered energy to initiate a chemical reaction by converting the electric current to the heat via a bridgewire. This initiator is widely used in the field of aerospace industry in the solid rocket propellant motors, separation systems and etc due to its low weight and high reliability. In this research, a m...

2014
Simon J. Pelletier Marie Lagacé Isabelle St-Amour Dany Arsenault Giulia Cisbani Audrey Chabrat Shirley Fecteau Martin Lévesque Francesca Cicchetti

BACKGROUND The application of low-intensity direct current electric fields has been experimentally used in the clinic to treat a number of brain disorders, predominantly using transcranial direct current stimulation approaches. However, the cellular and molecular changes induced by such treatment remain largely unknown. METHODS Here, we tested various intensities of direct current electric fi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی نساجی 1386

در الکتروریسی، محلول های پلیمری در طول مسیرشان به طرف جمع کننده، باردار می باشند. چگونگی پخش بار باقیمانده، روی نحوه دفع یکدیگر الیاف و آرایش یافتگی آن ها اثر می گذارد. طبیعت جمع کننده می تواند روی نحوه پخش بار باقیمانده، تراکم و آرایش یافتگی الیاف اثر بگذارد. در این پروژه اثرات جمع کننده های مختلف بررسی شد. ابتدا صفحات و توری های مختلف فلزی با ابعاد مش مختلف و جنس های مختلف برای قسمت برداشت دس...

Journal: :Physics in medicine and biology 2016
Hiroo Tarao Hironobu Miyamoto Leena Korpinen Noriyuki Hayashi Katsuo Isaka

Most results regarding induced current in the human body related to electric field dosimetry have been calculated under uniform field conditions. We have found in previous work that a contact current is a more suitable way to evaluate induced electric fields, even in the case of exposure to non-uniform fields. If the relationship between induced currents and external non-uniform fields can be u...

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