نتایج جستجو برای: pulsed current densities

تعداد نتایج: 857041  

Journal: :Acta Metallurgica Sinica (English Letters) 2019

Journal: :Journal of the Korean Society for Nondestructive Testing 2012

Journal: :IEEJ Transactions on Fundamentals and Materials 2000

Journal: :Journal of the Spectroscopical Society of Japan 1965

2012
Istiaque Ahmed Vuk Vojisavljevic

Current interest in the application of pulsed electromagnetic field (PEMF) as alternative therapy for different medical conditions has proved to be successful. A number of investigations demonstrated that low frequency PEMF enables the induction of significant current in tissues and allows for an enhanced biological effect and thus, can facilitate wound healing. In our previous study [1] we pre...

2009
I Vurgaftman C L Canedy C S Kim M Kim W W Bewley J R Lindle J Abell J R Meyer

We discuss the state-of-the-art performance of interband cascade lasers emitting in the 3–5μm spectral band. Broad-area devices with five active stages display pulsed threshold current densities as low as 400A cm−2 at room temperature. Auger decay rates are extracted from the analysis of threshold current densities and differential slope efficiencies of nearly 30 lasers, and found to be signifi...

2007
H. K. Choi

III Two types of III-V diode lasers have been developed for new emission wavelengths. We have obtained emission at 0.9 to 1.06 Jim nom quantum-well lasers with a strained InGaAs active layer and AlGaAs confining layers. Organometallic vapor phase epitaxy (OMVPE) was used to grow the layers on GaAs substrates. These InGaAs/AlGaAs lasers have achieved threshold current densities as low as 65 Afcm...

E. Ghassemali, I. Hajiannia, M. Atapour, M. Shamanian, R. Ashiri,

In this study, the effects of the second pulse resistance spot welding on the microstructure and mechanical properties of TRIP1100 steel were evaluated. The thermal process after welding was designed to improve metallurgical properties with pulse currents of 6kA, 9kA and 12kA after initial welding with 10kA current. The effect of the second pulse on mechanical and microstructural properties was...

2010
G. A. Rochau J. E. Bailey

Applied spectroscopy is a powerful diagnostic tool for high energy density plasmas produced with modern pulsed power facilities. These facilities create unique plasma environments with a broad range of electron densities 1013–1023 cm−3 and temperatures 100–103 eV immersed in strong magnetic 100 T and electric up to 1 GV/m fields. This paper surveys the application of plasma spectroscopy to diag...

2008
Q. J. Wang C. Pflügl L. Diehl F. Capasso S. Furuta H. Kan

Introduction: Quantum cascade (QC) lasers are very important optical sources that can cover the whole mid-infrared range (3–15 mm) for gas sensing, industrial process monitoring, and military applications [1]. They have become even more interesting for commercial applications in recent years because of their successful growth by metal organic vapour phase epitaxy (MOVPE) [2–6] technology, which...

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