Results 51 to 60 of about 284,523 (291)

Nonlocal response in plasmonic waveguiding with extreme light confinement

open access: yesNanophotonics, 2013
We present a novel wave equation for linearized plasmonic response, obtained by combining the coupled real-space differential equations for the electric field and current density.
Toscano Giuseppe   +8 more
doaj   +1 more source

Giant Birefringence of Periodic Dielectric Waveguides

open access: yesIEEE Photonics Journal, 2011
The giant (Δn >; 1.5) and broadband achromatic birefringence is realized by periodic dielectric waveguides (PDWs), which benefit from low loss transmission, compact size, and simple structure.
Wenfu Zhang   +3 more
doaj   +1 more source

All‐Aqueous Pullulan Fibers Enabling Visible‐to‐Near‐Infrared Waveguiding with Mechanical and Thermal Resilience

open access: yesAdvanced Functional Materials, EarlyView.
Pullulan, a biomass‐derived polysaccharide, is transformed into transparent optical fibers using a solvent‐free borax hydrogel‐spinning method. The fibers outperform PMMA with ≈200 MPa tensile strength and 200 °C stability, while uniquely guiding visible‐to‐NIR light and enabling additive‐free humidity sensing.
Yuya Fukata   +4 more
wiley   +1 more source

Engineering topological interface states in metal-wire waveguides for broadband terahertz signal processing

open access: yesNanophotonics
Innovative terahertz waveguides are in high demand to serve as a versatile platform for transporting and manipulating terahertz signals for the full deployment of future six-generation (6G) communication systems.
Ghazialsharif Mohammad   +7 more
doaj   +1 more source

Compact Single-Mode Silicon Hybrid Rib/Strip Waveguide With Adiabatic Bends

open access: yesIEEE Photonics Journal, 2011
We report a low-loss, hybrid silicon waveguide geometry that consists of straight rib sections with a propagation loss of 0.27 ± 0.012 dB/cm and compact photonic wire bends.
W. Bogaerts, S. K. Selvaraja
doaj   +1 more source

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

open access: yesAdvanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy   +6 more
wiley   +1 more source

Tunable Plasmonic Band-Pass Filter with Dual Side-Coupled Circular Ring Resonators

open access: yesSensors, 2017
A wavelength band-pass filter with asymmetric dual circular ring resonators in a metal-insulator-metal (MIM) structure is proposed and numerically simulated.
Dongdong Liu   +5 more
doaj   +1 more source

Review of magnetostrictive patch transducers and applications in ultrasonic nondestructive testing of waveguides.

open access: yesUltrasonics, 2015
A magnetostrictive patch transducer (MPT) is a transducer that exploits the magnetostrictive phenomena representing interactions between mechanical and magnetic fields in ferromagnetic materials.
Y. Kim, Young Eui Kwon
semanticscholar   +1 more source

Tailorable stimulated Brillouin scattering in nanoscale silicon waveguides [PDF]

open access: yesNature Communications, 2013
Nanoscale modal confinement is known to radically enhance the effect of intrinsic Kerr and Raman nonlinearities within nanophotonic silicon waveguides. By contrast, stimulated Brillouin-scattering nonlinearities, which involve coherent coupling between ...
Heedeuk Shin   +7 more
semanticscholar   +1 more source

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

open access: yesAdvanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi   +13 more
wiley   +1 more source

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