Results 1 to 10 of about 55,575 (166)

Mirrorless open cavities enabled by boundary incompatibility between perfect electric conductor and perfect magnetic conductor parallel-plate waveguides [PDF]

open access: yesScientific Reports
The most basic approach to confining electromagnetic waves is to place mirrors along their path, yet achieving confinement without conventional mirrors remains a major challenge.
Seong-Han Kim, Chul-Sik Kee
doaj   +2 more sources

Influence of mode confinement factor on the modulation properties of the Vertical Cavity Surface Emitting VCSEL laser [PDF]

open access: yesمجلة التربية والعلم, 2021
Vertical cavity surface emitting laser VCSEL is currently the main solution for many technological aspects, ultrafast optical interconnecting, Gigabit Ethernet, etc.
Afrah Kareem, Younis Qurot
doaj   +1 more source

Confinement and the safety factor profile [PDF]

open access: yesPhysics of Plasmas, 1996
The conjecture that the safety factor profile, q(r), controls the improvement in tokamak plasmas from poor confinement in the Low- (L-) mode regime to improved confinement in the supershot regime has been tested in two experiments on the Tokamak Fusion Test Reactor (TFTR) [Plasma Phys. Controlled Nucl. Fusion Res. 1, 51 (1987)].
S. H. Batha   +10 more
openaire   +3 more sources

Optical imaging of the intrinsic adsorption kinetics in single zeolite nanoparticles [PDF]

open access: yesNature Communications
The confinement effect is increasingly recognized as a critical factor influencing guest–framework interactions in molecular sieves, yet its impact on adsorption kinetics remains largely unexplored.
Xuannuo Yi   +8 more
doaj   +2 more sources

Experimental Demonstration of Germanium-on-Silicon Slot Waveguides at Mid-Infrared Wavelength

open access: yesIEEE Photonics Journal, 2022
We first demonstrated a slot waveguide based on a Ge-on-Si (GOS) platform with a 3 μm thickness of the Ge in the mid-infrared wavelength range at 4.2 μm.
Jinha Lim   +3 more
doaj   +1 more source

Investigation of the effect of impact load on concrete-filled steel tube columns under fire

open access: yesFracture and Structural Integrity, 2020
Concrete-filled steel tube (CFST) columns are increasingly used in the construction of high-rise buildings which require high strength and large working space especially at lower stories.
Ali Golsoorat Pahlaviani   +2 more
doaj   +3 more sources

Perception of musculoskeletal pain in the state of confinement: associated factors [PDF]

open access: yesRevista Latino-Americana de Enfermagem, 2021
Objective: to describe the perception of musculoskeletal pain in the population and how the state of confinement (adopted as a measure to control contagion by COVID-19) has interfered with it, as well as identifying the sociodemographic, occupational, physical, and psychosocial factors involved.
Carlos Carpintero-Rubio   +4 more
openaire   +5 more sources

Designing Mid-Infrared Gold-Based Plasmonic Slot Waveguides for CO2-Sensing Applications

open access: yesSensors, 2021
Plasmonic slot waveguides have attracted much attention due to the possibility of high light confinement, although they suffer from relatively high propagation loss originating from the presence of a metal.
Parviz Saeidi   +8 more
doaj   +1 more source

Confinement factors and gain in optical amplifiers [PDF]

open access: yesIEEE Journal of Quantum Electronics, 1997
A new identity is derived which relates the gain and the field distribution (or confinement factor) in a dielectric waveguide with complex refractive indices. This identity is valid for any guided mode of waveguides with an arbitrary cross section. It provides a new check of the accuracy of mode solvers.
Visser, T.D.   +3 more
openaire   +2 more sources

Laser Processing For Nanoscale Size Quantum Wires of AlGaAs/GaAs [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2014
In this work we investigate and calculate theoretically the variation in a number of optoelectronic properties of AlGaAs/GaAs quantum wire laser, with emphasis on the effect of wire radius on the confinement factor, density of states and gain factor have
Ahlam H. Jaffer   +2 more
doaj   +1 more source

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