Results 31 to 40 of about 2,562,760 (195)

A borane laser [PDF]

open access: yesNature Communications, 2015
Emission from electronically excited species forms the basis for an important class of light sources-lasers. So far, commercially available solution-processed blue-emitting laser materials are based on organic compounds or semiconductor nanocrystals that have significant limitations: either low solubility, low chemical- and/or photo-stability and/or ...
Cerdán, L.   +4 more
openaire   +5 more sources

Implementation of Ag/ SiO2 nanofilms for metamaterial engineering

open access: yesResults in Physics, 2022
Low dimensions of the nanostructured thin films are essential in applications of miniaturized optical systems. Noble metal thin films of different thicknesses (4–10 nm) were obtained by radio frequency magnetron sputtering (rfMS) with controlled ...
Petronela Prepelita   +3 more
doaj   +1 more source

Dynamics of pore formation during laser powder bed fusion additive manufacturing

open access: yesNature Communications, 2019
Laser powder bed fusion additive manufacturing is an emerging 3D printing technique for the fabrication of advanced metal components. Widespread adoption of it and similar additive technologies is hampered by poor understanding of laser-metal ...
Aiden A. Martin   +14 more
semanticscholar   +1 more source

LIGO: The laser interferometer gravitational-wave observatory [PDF]

open access: yes2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006
LIGO is a trio of extremely sensitive Michelson interferometers built to detect gravitational waves from space. We describe predicted sources of gravitational waves, our detectors, and the results of our recent observations.
B. Abbott   +499 more
semanticscholar   +1 more source

Enhancing laser beam performance by interfering intense laser beamlets

open access: yesNature Communications, 2019
Enhanced coupling of laser energy to the target particles is a fundamental issue in laser-plasma interactions. Here the authors demonstrate increased photon absorption leading into higher laser to electron and proton energy transfer through the ...
A. Morace   +26 more
doaj   +1 more source

In situ X-ray imaging of defect and molten pool dynamics in laser additive manufacturing

open access: yesNature Communications, 2018
The laser–matter interaction and solidification phenomena associated with laser additive manufacturing (LAM) remain unclear, slowing its process development and optimisation.
C. L. Leung   +5 more
semanticscholar   +1 more source

Low spatial frequency laser-induced periodic surface structures in fused silica inscribed by widely tunable femtosecond laser pulses

open access: yesScientific Reports, 2022
The formation and evolution of laser-induced periodic surface structures in fused silica under irradiation of widely tunable (in the 1–3  $$\upmu$$ μ m range) linearly polarized femtosecond (200 fs) pulses was studied experimentally.
Marius Navickas   +4 more
doaj   +1 more source

O processo sucessório e a abertura de capital nas empresas brasileiras: objetivos conflitantes

open access: yesRAE: Revista de Administração de Empresas, 1994
A abertura de capital de uma companhia pode não ser a solução adequada a problemas de sucessão em empresas familiares brasileiras.
Jairo Laser Procianoy
doaj  

Laser‐Induced Graphene: From Discovery to Translation

open access: yesAdvances in Materials, 2018
Laser‐induced graphene (LIG) is a 3D porous material prepared by direct laser writing with a CO2 laser on carbon materials in ambient atmosphere. This technique combines 3D graphene preparation and patterning into a single step without the need for wet ...
Ruquan Ye, Dustin K. James, J. Tour
semanticscholar   +1 more source

Contemporary particle-in-cell approach to laser-plasma modelling

open access: yes, 2015
Particle-in-cell (PIC) methods have a long history in the study of laser-plasma interactions. Early electromagnetic codes used the Yee staggered grid for field variables combined with a leapfrog EM-field update and the Boris algorithm for particle ...
Bennett   +9 more
semanticscholar   +1 more source

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