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Quantum Dot Reflective Semiconductor Optical Amplifiers: Optical Pumping Compared with Electrical Pumping [PDF]

open access: yesNanomaterials, 2022
A comprehensive study has been conducted on quantum dot reflective semiconductor optical amplifiers (QD-RSOAs) with optical pumps (OPs). Moreover, few studies have been completed on OP-based QD-RSOAs.
Farshad Serat Nahaei   +2 more
doaj   +3 more sources

Electrical Pumping of Perovskite Diodes: Toward Stimulated Emission [PDF]

open access: yesAdvanced Science, 2021
The success of metal halide perovskites in photovoltaic and light‐emitting diodes (LEDs) motivates their application as a solid‐state thin‐film laser. Various perovskites have shown optically pumped stimulated emission of lasing and amplified spontaneous
Changsoon Cho   +8 more
doaj   +3 more sources

Quasi-2D lead halide perovskite gain materials toward electrical pumping laser

open access: yesNanophotonics, 2021
Quasi two-dimensional (2D) lead halide perovskite materials have shown outstanding performance in various photoelectric devices, including perovskite light-emitting diodes (LEDs) and perovskite optical pumping lasers.
Zhao Chenyang, Qin Chuanjiang
doaj   +2 more sources

Ultrabright single-photon source on diamond with electrical pumping at room and high temperatures [PDF]

open access: yesNew Journal of Physics, 2016
The recently demonstrated electroluminescence of color centers in diamond makes them one of the best candidates for room temperature single-photon sources.
D Yu Fedyanin, M Agio
doaj   +2 more sources

Development and exploitation features of methane-coal wells using downhole pumping equipment [PDF]

open access: yesMATEC Web of Conferences, 2016
In this article extraction of methane from coal beds is presented. The article presents results of the study of downhole pumping equipment used in the exploitation of coal bed methane wells.
Kurganova Elena   +2 more
doaj   +2 more sources

A fault diagnosis model for pumping units based on small sample electric parameters [PDF]

open access: yesScientific Reports
In the field of modern petroleum industry, fault diagnosis and classification of pumping units are among the most crucial research topics. The conventional diagnostic method involves installing sensors on the pumping unit to analyze the dynamometer cards(
Chunhua Yuan, Zhupei Liao, Xiangyu Li
doaj   +2 more sources

Review on Solar Photovoltaic-Powered Pumping Systems

open access: yesEnergies, 2022
Water and energy are becoming more and more important in agriculture, urban areas and for the growing population worldwide, particularly in developing countries.
Levon Gevorkov   +2 more
doaj   +2 more sources

In-depth description of Electrohydrodynamic conduction pumping of dielectric liquids: physical model and regime analysis [PDF]

open access: yesThe Physics of Fluids, 2019
In this work, we discuss the fundamental aspects of Electrohydrodynamic (EHD) conduction pumping of dielectric liquids. We build a mathematical model of conduction pumping that can be applied to all sizes, down to microsized pumps.
Abramowitz M.   +18 more
core   +4 more sources

Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet [PDF]

open access: yesPhysical Review Letters, 2006
We report direct electrical detection of spin pumping, using a lateral normal metal/ferromagnet/normal metal device, where a single ferromagnet in ferromagnetic resonance pumps spin polarized electrons into the normal metal, resulting in spin ...
B. J. van Wees   +7 more
core   +5 more sources

Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy

open access: yesNature Communications
Irrigation reduces crop vulnerability to drought and heat stress and thus is a promising climate change adaptation strategy. However, irrigation also produces greenhouse gas emissions through pump energy use.
Avery W. Driscoll   +4 more
doaj   +2 more sources

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