Results 51 to 60 of about 36,998 (231)

Design of an 845-nm GaAs vertical-cavity silicon-integrated laser with an intracavity grating for coupling to a SiN waveguide circuit [PDF]

open access: yes, 2017
A short-wavelength hybrid GaAs vertical-cavity silicon-integrated laser (VCSIL) with in-plane waveguide coupling has been designed and optimized using numerical simulations.
Baets, Roel   +6 more
core   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Wheat flour particle size: Influence of mill design and effects on quality and performance

open access: yesJSFA reports, EarlyView.
Abstract Among the various characteristics of wheat (Triticum aestivum) flour, particle size is of paramount importance globally. The industrial process of separating the three main components (endosperm, bran, and germ) must ensure that the desired quality is delivered to customers through a progressive reduction in the size of the endosperm until the
Ricardo Barroso Lopes   +3 more
wiley   +1 more source

Advances in Design-Based Research

open access: yesFrontline Learning Research, 2014
Design-based research is a core methodology of the Learning Sciences. Historically rooted as a movement away from the methods of experimental psychology, it is a means to develop “humble” theory that takes into account numerous contextual effects for ...
Vanessa Svihla
doaj   +1 more source

High‐Efficiency Phosphor Thin Films With Controlled Lateral Displacement for Low Color Crosstalk in Micro‐LED Displays

open access: yesJournal of the Society for Information Display, EarlyView.
High‐efficiency nano‐phosphor thin films were developed for micro‐LED color conversion, achieving high quantum efficiency and reduced lateral photon displacement. The optimized film structure effectively suppresses color crosstalk and enables high‐performance, full‐color micro‐LED displays.
Zengzhi Pei   +3 more
wiley   +1 more source

Novel 1064 nm DBR lasers combining active layer removal and surface gratings

open access: yesElectronics Letters, 2021
The fabrication and characterisation details of novel distributed Bragg reflector (DBR) diode lasers emitting around 1064 nm are presented here. The AlGaAs epitaxial layer stack used here allows the removal of the active quantum wells in passive sections
O. Brox   +8 more
doaj   +1 more source

Angle Dependence of Photonic Enhancement of Magneto-Optical Kerr Effect in DMS Layers

open access: yes, 2014
We investigate theoretically an angle dependence of enhancement of polar magneto-optical Kerr effect (MOKE) obtained thanks to a deposition of a paramagnetic Diluted Magnetic Semiconductor (DMS) layer on one-dimensional photonic crystal layer.
Koba, Marcin, Suffczynski, Jan
core   +1 more source

Dynamic properties of silicon-integrated short-wavelength hybrid-cavity VCSEL [PDF]

open access: yes, 2016
We present a vertical-cavity surface-emitting laser (VCSEL) where a GaAs-based "half-VCSEL" is attached to a dielectric distributed Bragg reflector on silicon using ultra-thin divinylsiloxane-bis-benzocyclobutene (DVS-BCB) adhesive bonding, creating a ...
Baets, Roel   +6 more
core   +1 more source

Novel Sulfur‐Rich Polymers from Inverse Vulcanization as Functional Building Blocks for Photonics

open access: yesMacromolecular Rapid Communications, EarlyView.
Isopropenyl aromatic comonomers, in particular novel 2,7‐diisopropenylfluorene and 2,8‐diisopropenyldibenzothiophene, synthesized by sustainable, facile, single‐step SMCCR from available brominated substrates are exploited in the Inverse Vulcanization process to obtain functional Sulfur‐rich macromolecular materials.
Raimondo Insogna   +7 more
wiley   +1 more source

Anti-Doping Monitoring Web-Based Android for Athletes Disabilities

open access: yesJournal of Coaching and Sports Science
The usage of doping has been banned in the world of sports. This ban is regulated by law and must be adhered to by all athletes. This research aimed to identify the need for efforts to prevent doping use and develop a monitoring tool for doping ...
Fadilah Umar   +3 more
doaj   +1 more source

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