Results 31 to 40 of about 71,755 (196)
Analysis and Design of Tunable THz 1-D Leaky-Wave Antennas Based on Nematic Liquid Crystals
Applied Sciences, 2022 The tunable properties of nematic liquid crystals (NLC) are here exploited in a peculiar leaky waveguide with artificial magnetic conductors as the lateral walls, a bottom metal ground plane, and a homogenized metasurface on top to obtain dynamic ...
Walter Fuscaldo +5 more
doaj +1 more source
Leaky mode integrated optical fibre refractometer
Optics Express, 2018 A route to monitor external refractive indices greater than the core index of the waveguide is presented. Initial application utilizes an integrated optical fibre (IOF) platform due to its potential for use in harsh environment sensing. IOF is fabricated using a bespoke flame hydrolysis deposition process to fuse an optical fibre to a planar substrate ...
Alan C. Gray +6 more
openaire +4 more sources
Low-frequency excitation of leaky modes in a microstripline with a top cover [PDF]
, 2011 This paper studies the excitation of a physical leaky mode in a covered microstrip structure at low frequencies. We calculate the current excited in the line by a delta-gap voltage source via a full wave analysis based on a mixed potential integral ...
Bernal Méndez, Joaquín +2 more
core +1 more source
Leaky modes of solid dielectric spheres
Physical Review A, 2017 19 pages, 9 figures, 24 equations, 28 references, one Appendix. (There exists some overlap with the corresponding conference paper, "Leaky Modes of Dielectric Cavities," by M. Mansuripur, M. Kolesik, and P. Jakobsen, Proceedings of SPIE 9931, 99310B~1:20 (2016); also available at arXiv:1610.00045.)
Mansuripur, Masud +2 more
openaire +3 more sources
Leaky modes in multilayer uniaxial optical waveguides [PDF]
Applied Optics, 1990 The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle have been studied for the fundamental and first hybrid modes.
Torner Sabata, Lluís +2 more
openaire +5 more sources
The Astrophysical Journal Letters, 2023 Magnetohydrodynamic (MHD) waves are often invoked to interpret quasiperiodic pulsations (QPPs) in solar flares. We study the response of a straight flare loop to a kink-like velocity perturbation using three-dimensional MHD simulations and forward model ...
Mijie Shi +4 more
doaj +1 more source
Phase of Topological Lattice with Leaky Guided Mode Resonance
Nanomaterials, 2023 Topological nature in different areas of physics and electronics has often been characterized and controlled through topological invariants depending on the global properties of the material.
Heejin Choi +4 more
doaj +1 more source
Elastic Wave Eigenmode Solver for Acoustic Waveguides [PDF]
, 2017 A numerical solver for the elastic wave eigenmodes in acoustic waveguides of inhomogeneous cross-section is presented. Operating under the assumptions of linear, isotropic materials, it utilizes a finite-difference method on a staggered grid to solve for
Dostart, Nathan +2 more
core +4 more sources
Spurious leaky mode solutions and experimental verification of the second leaky wave [PDF]
, 1999 This paper presents the revelation of spurious leaky mode solutions of the dispersion equation, and experimental confirmation of the occurrence of the second leaky wave on the slotline. The appearance of the spurious improper nonphysical solution instead
Macháč, J. +4 more
core +1 more source
High-efficiency wide-band metal-dielectric resonant grating for 20 fs pulse compression [PDF]
Journal of the European Optical Society-Rapid Publications, 2007 More than 95% average efficiency TE-polarisation diffraction over a 200 nm wavelength range centred at 800 nm is obtained by a metal-dielectric grating structure with non-corrugated mirror.
Flury M. +4 more
doaj +1 more source