Results 161 to 170 of about 5,648,023 (377)

Generation of Giant Pulses from a Neo-dymium Laser by a Reversibly Bleachable Absorber [PDF]

, 1964
B. H. Soffer, R. H. Hoskins
openalex   +1 more source

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

Advanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör, Moritz Grünewald, Kevin Popp, Ihsan Murat Kusoglu, Stephan Barcikowski, Stan Gann, Thomas Schuffenhauer, Martin Bastian, Claas Bierwisch, Johannes Rudloff   +9 more
wiley   +1 more source

A Readout Technique for the Laser Fog Disdrometer [PDF]

, 1966
Brian J. Thompson, Georgy B. Parrent, John H. Ward, Bruce Justii   +3 more
openalex   +1 more source

A Novel Approach on Rapid Alloy Development of Tool Steels for Laser Powder Bed Fusion by In Situ Alloying

Advanced Engineering Materials, EarlyView.
A novel approach for alloy development in laser powder bed fusion is introduced. Instead of producing massive samples of one composition at a time, prepressed powder bed samples produced from powder mixtures are processed. Guidelines for the selection of precursor powders are developed.
Felix Großwendt, Anna Strauch, Jonathan Lentz, Arne Röttger, Rainer Fechte‐Heinen, Sebastian Weber, Werner Theisen   +6 more
wiley   +1 more source

Femtosecond pump probe spectroscopy for the study of energy transfer of light-harvesting complexes from extractions of spinach leaves

South African Journal of Science, 2009
Measurements of ultrafast transient processes, of temporal durations in the picosecond and femtosecond regime, are made possible by femtosecond pump probe transient absorption spectroscopy. Such an ultrafast pump probe transient absorption setup has been
S. Ombinda-Lemboumba, A. du du Plessis, R.W. Sparrow, P. Molukanele, L.R. Botha, E.G. Rohwer, C.M. Steenkamp, L. van Rensburg   +7 more
doaj  

Electrically pumped topological laser with valley edge modes

Nature, 2020
Yongquan Zeng, Udvas Chattopadhyay, B. Zhu, Bo Qiang, Jinghao Li, Yuhao Jin, Lianhe H. Li, A. Davies, E. Linfield, Baile Zhang, Y. Chong, Qi Jie Wang   +11 more
semanticscholar   +1 more source

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

INTERFEROMETRIC MEASUREMENT OF LINEWIDTH AND NOISE IN GaAs LASERS [PDF]

, 1964
John A. Armstrong, Archibald W. Smith
openalex   +1 more source

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

Analysis of Colorfastness in Metallic Prints Using Absorption Spectroscopy

Journal of Spectroscopy
Color is essential for the fashion and art of fabrics, with its retention being a quality measure of great significance for the brand and user. The colorfastness of some metallic fabrics has been established using absorption spectroscopy, by determining ...
Sylvia Owusua Donkor, Samuel Sonko Sackey, Michael Kwame Vowotor, Charles Lloyd Yeboah Amuah, Rabbi Boateng, Ebenezer Teye Tatchie, Jerry Opoku-Ansah, Peter Osei-Wusu Adueming   +7 more
doaj   +1 more source