Results 171 to 180 of about 513,877 (318)

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

Advanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak, David Reynders, Christian Nowroth, Jens Twiefel, Jörg Wallaschek, Sarah Nothdurft, Jörg Hermsdorf, Stefan Kaierle   +7 more
wiley   +1 more source

Manipulating room-temperature phosphorescence by electron-phonon coupling. [PDF]

Chem Sci
Ma L, Cong M, Sun S, Ma X.
europepmc   +1 more source

A Novel Approach to Produce Metal–Metal Composites by Leveraging Immiscibility: Laser Powder Bed Fusion of Nanosilver‐Dispersed Titanium

Advanced Engineering Materials, EarlyView.
Incorporating nanosized silver into titanium for antimicrobial materials exploits the metastable miscibility gap between silver and titanium. Silver nanoparticles are synthesized via pulsed laser ablation in liquid. Silver addition refines the microstructure, increases hardness by 30%, and reduces Staphylococcus capitis microbial adhesion by 70%, with ...
Hamed Shokri, Silja‐Katharina Rittinghaus, Janett Schmelzer, Jessica Bertrand, Bilal Gökce   +4 more
wiley   +1 more source

Maximizing spectral sensitivity without compromising resolution in phase-incremented, steady-state solution NMR. [PDF]

Nat Commun
Shif M, Zur Y, Lupulescu A, He T, Montrazi ET, Frydman L.   +5 more
europepmc   +1 more source

Comparative Wear and Friction Analysis of Sliding Surface Materials for Hydrostatic Bearing under Oil Supply Failure Conditions

Advanced Engineering Materials, EarlyView.
Hydrostatic bearings excel in high‐precision applications, but their performance hinges on a continuous external supply. This study evaluates various material combinations for sliding surfaces to mitigate damage during supply failures or misalignment and to discover the most effective materials identified for enhancing the reliability and efficiency of
Michal Michalec, Lukáš Daněk, Jan Foltýn, Petr Svoboda, Carsten Gachot, Martin Hartl, Ivan Křupka   +6 more
wiley   +1 more source

Photodegradation of Pollutants in the Hydrophobic Cores of Dissolved Organic Matter: When Is It Important? [PDF]

Environ Sci Technol
Mondino E, Carena L, Gu C, Vione D.
europepmc   +1 more source

A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?

Advanced Engineering Materials, EarlyView.
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli, Manel Rodríguez Ripoll, Sabine Schwarz, Ali Erdemir, Maria Clelia Righi, Carsten Gachot   +5 more
wiley   +1 more source

Real-space observation of the dissociation of a transition metal complex and its concurrent energy redistribution. [PDF]

Nat Commun
Schori A, Biasin E, Banerjee A, Boutet S, Bucksbaum PH, Carbajo S, Gaffney KJ, Glownia JM, Hartsock R, Ledbetter K, Kaldun A, Koglin JE, Kunnus K, Lane TJ, Liang M, Minitti MP, O'Neal JT, Parrish RM, Poitevin F, Ruddock JM, Nelson S, Stankus B, Weber PM, Wolf TJA, Odelius M, Natan A.   +25 more
europepmc   +1 more source

A Perspective on Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed Stainless Steels

Advanced Engineering Materials, EarlyView.
This perspective article explores an innovative powder metallurgical approach to producing high‐nitrogen steels by utilizing a mixture of stainless steel and Si3N4. This mixture undergoes hot isostatic pressing followed by direct quenching. The article also examines adapting this method to laser powder bed fusion (PBF‐LB/M) to overcome nitrogen ...
Louis Becker, Felix Radtke, Jonathan Lentz, Simone Herzog, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

Dynamical patterns and nonreciprocal effective interactions in an active-passive mixture through exact hydrodynamic analysis. [PDF]

Nat Commun
Mason J, Jack RL, Bruna M.
europepmc   +1 more source