Results 171 to 180 of about 2,708,251 (409)

Cascaded wavelength conversions using four-wave mixing in semiconductor optical amplifiers [PDF]

, 1997
Wavelength conversion in wavelength-division multiplexed (WDM) communication systems would provide significant network performance improvement. Optoelectronic, cross-gain saturation, and cross phase saturation wavelength converters are candidate ...
Geraghty, David F., Koren, Uzi, Lee, Robert B., Vahala, Kerry J.   +3 more
core  

Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed FeCr(Si)N Stainless Steel

Advanced Engineering Materials, EarlyView.
The alloying element Nitrogen enhances stainless steel strength, corrosion resistance, and stabilizes austenite. This study develops austenitic FeCr(Si)N steel production via powder metallurgy. Fe20Cr and Si3N4 are hot isostatically pressed, creating an austenitic microstructure.
Louis Becker, Felix Radtke, Jonathan Lentz, Santiago Benito, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

The Use of Solar Energy for a Smart Home [PDF]

Journal of Electrical and Electronics Engineering
In this paper, we aim to determine the parameters of a photovoltaic installation that will ensure the electricity needs of a home equipped with smart equipment.
PANTEA Mircea, BURCA Adrian, CODREAN Marius, NOVAC Mihaela, CASTRASE Simona   +4 more
doaj  

Cross talk penalty in two-channel wavelength conversion by four-wave mixing in a strained semiconductor optical amplifier [PDF]

, 1997
A crucial function in wavelength-division multiplexed (WDM) all-optical networks is a wavelength converter. This function enhances wavelength routing options and improves network reconfigurability.
Geraghty, David F., Hedekvist, Per Olof, Koren, Uzi, Lee, Robert B., Vahala, Kerry J.   +4 more
core  

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing—Part II: Processability by Powder Bed Fusion of Metals Using a Laser Beam

Advanced Engineering Materials, EarlyView.
In this manuscript, the processability of X2CrNiMo17‐12‐2 powder coated with silicon carbide, silicon, and silicon nitride nanoparticles is investigated. The amount of nanoparticles varies from 0.25 to 1 vol%. By coating the powder feedstock material with nanoparticles, an enlargement of the process window and an increase in the build rate are achieved.
Nick Hantke, Tim R. Brocksieper, Arne Lüddecke, Tobias Grimm, Arno Kwade, Jan T. Sehrt   +5 more
wiley   +1 more source

Maintenance of Constant Wave Parameters by Sperm Flagella at Reduced Frequencies of Beat [PDF]

, 1973
1. Treatment of Ciona spermatozoa with low concentrations of Triton X-100 (less than 0·01 %) causes them to beat at lower than normal frequencies. The wavelength of the flagellar bending waves remains constant over the range from 10 to 40 Hz.
Brokaw, C. J., Josslin, R.
core  

Sub-wavelength focusing meta-lens

, 2012
We show that planar a plasmonic metamaterial with spatially variable meta-atom parameters can focus transmitted light into sub-wavelength hot-spots located beyond the near-field of the metamaterial.
Rogers, Edward T. F., Roy, Tapashree, Zheludev, Nikolay I.   +2 more
core   +1 more source

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing – Part I: Surface, Flowability, and Optical Properties of SiC, Si, and Si3N4 Coated Metal Powders

Advanced Engineering Materials, EarlyView.
Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke, Nick Hantke, Harald Zetzener, Jan T. Sehrt, Arno Kwade   +4 more
wiley   +1 more source

A length-scale analysis of instabilities in high pressure explosion flames, [PDF]

, 2010
Cellular flame structure in high pressure iso-octane-air explosion flames, obtained in the Leeds combustion bomb, was investigated using Schlieren cinematography and OH laser induced fluorescence.
Lockett, R. D.
core  

Solar Brightness Distribution at a Wavelength of 60 Centimetres. I. The Quiet Sun [PDF]

, 1955
G. Swarup, R. Parthasarathy
openalex   +1 more source