Results 81 to 90 of about 220,487 (206)

Experimental and Computational Investigations of Surface Polaritons at Metal‐Oxide‐Semiconductor Interfaces

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
STEM‐EELS and full‐wave FDTD reveal electron‐driven surface‐polariton modes at buried Au/oxide/Si interfaces with 10 nm SiO2 or Al2O3 spacers. Extinction is dominated by non‐radiative absorption, while oxide permittivity shifts the resonance and controls evanescent‐field penetration across the spacer into silicon.
Humaira Zafar   +6 more
wiley   +1 more source

Label-Free Biosensing With a Slot-Waveguide-Based Ring Resonator in Silicon on Insulator

open access: yesIEEE Photonics Journal, 2009
We present a slot-waveguide-based ring resonator in silicon on insulator (SOI) with a footprint of only 13 mum times 10 mum, fabricated with optical lithography.
Tom Claes   +5 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, Volume 38, Issue 51, 11 September 2026.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Improved Design Techniques for High Performance Planar Waveguide Slot Arrays

open access: yes, 2019
Waveguide slot antennas and arrays date back to the forties, but they are still nowadays very popular as high-frequency antennas, mainly for RADAR and communication systems.
Mazzarella, G, Montisci, G, Casula, GA
core   +1 more source

Results of experimental studies and numerical modeling of multistage waveguide-slotted membranes filters with complex slots geometry

open access: yesMATEC Web of Conferences, 2018
The article contains the results of an experimental study and numerical simulation of the amplitude-frequency characteristics of one, three and four-stage filters on waveguide-slotted membranes with complex resonance slot geometry membranes located in a ...
Kopylova Natalia   +2 more
doaj   +1 more source

Reverse Ridge Silicon Strip Waveguide and Silica Slot Waveguide Structure for the Dispersion at 1550 nm

open access: yesIEEE Photonics Journal, 2016
We have proposed a reverse ridge strip waveguide and a slot waveguide structure for the dispersion compensation at 1550 nm wavelength. The resonance between strip- and slot-waveguide modes has been used to calculate the dispersion at the required ...
Ashok Nandam   +3 more
doaj   +1 more source

Nonresonant Magnetic Flux Control Enabling Low‐Loss Epsilon‐Near‐Zero Cavity Antennas

open access: yesAdvanced Photonics Research, Volume 7, Issue 9, September 2026.
Can photonic doping be achieved without resonance? A passive metallic inclusion is shown to engineer effective permeability in epsilon‐near‐zero cavity antennas through magnetic‐flux exclusion, reproducing the response of resonant photonic dopants while reducing losses and providing a unified perspective on photonic doping.
Evandro César Vilas Boas   +1 more
wiley   +1 more source

Study of diode-iris controlled waveguide slot radiators [PDF]

open access: yes, 1967
Diode-iris controlled waveguide slot ...
Forman, B. J.   +2 more
core  

Luminescence enhancement from Si-based materials by introducing a photonic crystal double-heterostructure slot waveguide microcavity

open access: yes, 2011
We demonstrate a novel SOI-based photonic crystal(PC) double-heterostructure slot waveguide microcavity constructed by cascading three PC slot waveguides with different slot widths, and simulate the luminescence enhancement of sol-gel Erdoped SiO2 filled
Wang, Yue   +10 more
core   +1 more source

Design of a Low-SLL SIW Slot Array Antenna With a Large Declination in $Ka$ -Band

open access: yesIEEE Access, 2019
A small-size large-declination longitudinal slot array antenna based on substrate integrated waveguide (SIW) technology was proposed. Compared with the conventional SIW slot array, the proposed antenna achieves a larger declination and a lower SLL.
Chengwei Zhao   +4 more
doaj   +1 more source

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