نتایج جستجو برای: electrical current

تعداد نتایج: 945763  

2012
Kun-Rok Jeon Byoung-Chul Min Seung-Young Park Kyeong-Dong Lee Hyon-Seok Song Youn-Ho Park Young-Hun Jo Sung-Chul Shin

Understanding the interplay between spin and heat is a fundamental and intriguing subject. Here we report thermal spin injection and accumulation in CoFe/MgO/n-type Ge contacts with an asymmetry of tunnel spin polarization. Using local heating of electrodes by laser beam or electrical current, the thermally-induced spin accumulation is observed for both polarities of the temperature gradient ac...

2014
K. Prasad

The use of unconventional machining techniques in shaping metal matrix composites (MMCs) has generated considerable interest as the manufacturing of complicated die contours. Metal matrix composites are advanced materials having high specific strength, good wear resistance, and high thermal expansion coefficient. Electrical discharge machining is a best process to make complicated shapes on the...

Journal: :Biophysical journal 2007
Johan Lagerqvist Michael Zwolak Massimiliano Di Ventra

We study theoretically the feasibility of using transverse electronic transport within a nanopore for rapid DNA sequencing. Specifically, we examine the effects of the environment and detection probes on the distinguishability of the DNA bases. We find that the intrinsic measurement bandwidth of the electrodes helps the detection of single bases by averaging over the current distributions of ea...

Journal: :Computers in biology and medicine 1992
C R Johnson R S MacLeod P R Ershler

Electrocardiography has played an important role in the detection and characterization of heart function, both in normal and abnormal states. In this paper we present an inhomogeneous, anisotropic computer model of the human thorax for use in electrocardiography with emphasis on the calculation of transthoracic potential and current distributions. Knowledge of the current pathways in the thorax...

Journal: :Science 2003
Abraham Nitzan Mark A Ratner

Molecular conductance junctions are structures in which single molecules or small groups of molecules conduct electrical current between two electrodes. In such junctions, the connection between the molecule and the electrodes greatly affects the current-voltage characteristics. Despite several experimental and theoretical advances, including the understanding of simple systems, there is still ...

Journal: :علوم 0
محمداسماعیل عظیم عراقی m. e. azim araghi دانشگاه خوارزمی انسیه خلیلی درمنی ensieh khalili dermani دانشجو/دانشگاه خوارزمی

in this research work nano porous silicon layers with different porosity were prepared by using electrochemical etching. surface morphology and size of pores were investigated by scanning electron microscopy (sem).tio2 thin films with ebpvd method have been deposited on the surface of psi layers. the influence of anodization conditions such as anodization time interval and current density on el...

Journal: :IEEE Transactions on Aerospace and Electronic Systems 2023

Aircraft monitoring systems offer enhanced safety, reliability, reduced maintenance cost, and improved overall flight efficiency. Advancements in wireless sensor networks (WSNs) are enabling unprecedented data acquisition functionalities, but their applicability is restricted by power limitations, as batteries require replacement or recharging wired adds weight detracts from the benefits of tec...

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