Results 31 to 40 of about 219,661 (297)

AI-based defect detection and self-healing in metal additive manufacturing

open access: yesVirtual and Physical Prototyping
This pilot study develops a process to evaluate in-situ defect detection and self-healing in Ti-6Al-4V fabricated using laser-based powder bed fusion.
Jan Akmal   +9 more
doaj   +1 more source

Electro-Optical Modulator Requirements for 1 Tb/s per Channel Coherent Systems

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021
The electro-optical bandwidth and extinction ratio requirements of in-phase and quadrature modulators to enable 1 Tb/s per channel optical transmission rates are evaluated through numerical simulations.
Sandro Marcelo Rossi   +3 more
doaj   +1 more source

On the effect of building platform material on laser-powder bed fusion of a Ni-base superalloy HAYNES® 282®

open access: yesEuropean Journal of Materials, 2022
Additive manufacturing (AM) by laser powder bed fusion (LPBF) involves melting of layers of powder onto a substrate, called a building platform. Due to cost or convenience considerations, building platform materials rarely match the LPBF material ...
Abdul Shaafi Shaikh   +3 more
doaj   +1 more source

Electro-optics of confined systems

open access: yesJournal of Colloid and Interface Science
Confinement in microenvironments occurs in many natural systems and technological applications. However, little is known about the behaviour of the immersed nanoparticles. In this work we show that their diffusion, electro-orientation and electric field induced polarization can be determined through electric birefringence experiments.
Ana Cazorla   +3 more
openaire   +3 more sources

Influence of laser beam shape and post heat-treatment on the microstructure and mechanical properties of nickel-based alloy IN718 manufactured by laser powder bed fusion

open access: yesJournal of Materials Research and Technology
This study examines the effect of Gaussian and ring-shaped laser beam profiles on the microstructural development and mechanical properties of the PBF-LB/M processed nickel-based alloy Inconel 718 in its as-built and post-heat-treated conditions.
Matjaž Godec   +11 more
doaj   +1 more source

Design of programmable multi-wavelength tunable filter on lithium niobate

open access: yesResults in Physics, 2019
Tunable optical filters have a wide range of applications, especially in optical sensing systems and optical communication systems. In this letter, a programmable multi-wavelength tunable filter on Lithium Niobate (LN) is designed.
Yuan Yao   +6 more
doaj   +1 more source

Distributed photonic instrumentation for smart grids [PDF]

open access: yes, 2013
Photonic sensor networks possess the unique potential to provide the instrumentation infrastructure required in future smart grids by simultaneously addressing the issues of metrology and communications.
Beaumont, Phil   +6 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Quantum Modelling of Electro-Optic Modulators

open access: yes, 2011
Many components that are employed in quantum information and communication systems are well known photonic devices encountered in standard optical fiber communication systems, such as optical beamsplitters, waveguide couplers and junctions, electro-optic
Capmany, Jose   +1 more
core   +1 more source

On-dimensional off-chip beam steering and shaping using optical phased arrays on silicon-on-insulator [PDF]

open access: yes, 2011
Optical beam steering can find applications in several domains such as laser scanning, LiDAR (Light Detection And Ranging), wireless data transfer and optical switches and interconnects.
Karel Van Acoleyen   +4 more
core   +2 more sources

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