Results 21 to 30 of about 6,205,958 (287)

Dyakonov–Voigt surface waves [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019
Electromagnetic surface waves guided by the planar interface of an isotropic dielectric medium and a uniaxial dielectric medium, both non-dissipative, were considered, the optic axis of the uniaxial medium lying in the interface plane. Whereas this interface is known to support the propagation of Dyakonov surface waves when certain constraints are ...
Tom G. Mackay   +2 more
openaire   +4 more sources

Slot Waveguide Enhanced Bloch Surface Waves

open access: yesApplied Sciences, 2017
The paper presents a novel concept for the on-chip integration of a multilayer platform sustaining Bloch surface waves further enhanced by the so-called slot waveguide effect.
Matthieu Roussey
doaj   +1 more source

Linking Magma Storage and Ascent to Eruption Volume and Composition at an Arc Caldera

open access: yesGeophysical Research Letters, 2020
Conceptual models of magma storage and transport under calderas favor a connected system of sills and dikes. These features are individually below the resolution of standard seismic tomography, but radial seismic anisotropy can reveal where they exist in
David Miller   +7 more
doaj   +1 more source

Analysis and Elimination of Unwanted Resonances for Wideband Reflectarray Antenna Design at Sub-Millimeter Waves

open access: yesIEEE Access, 2020
In this study, unwanted additional resonances are analyzed and a method is developed to eliminate them for wideband offset dual reflectarray antenna at sub-millimeter waves.
Eun-Cheol Choi, Sangwook Nam
doaj   +1 more source

Application of an Automatic Noise or Signal Removal Algorithm Based on Synchrosqueezed Continuous Wavelet Transform of Passive Surface Wave Imaging: A Case Study in Sichuan, China

open access: yesApplied Sciences, 2021
Passive surface wave imaging based on noise cross-correlation has been a research hotspot in recent years. However, because randomness of noise is difficult to achieve in reality, prominent noise sources will inevitably affect the dispersion measurement.
Jie Fang, Guofeng Liu, Yu Liu
doaj   +1 more source

Estimation of Low-Velocity Landfill Thickness with Multi-Method Seismic Surveys

open access: yesGeotechnics, 2023
Conventional geophysical methods are suitable for estimating the thicknesses of subsoil layers. By combining several geophysical methods, the uncertainties can be assessed.
Yaniv Darvasi, Amotz Agnon
doaj   +1 more source

Radio-Wave Propagation and Electromagnetic Surface Waves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1947
A Discrepancy and Its Resolution. - The problem of the propagation of radio-waves along the surface of the (plane) earth was first treated in a celebrated paper by A. Sommerfeld (1909).(1) Let the (r, φ)-plane of a cylindric system of coordinates coincide with the plane of the earth surface and let the z-axis point vertically upward.
openaire   +3 more sources

2010 Annual Report

open access: yes
Oregon Wave Energy Trust (OWET) is a nonprofit public-private partnership funded by the Oregon Innovation Council. Its mission is to support the responsible development of wave energy in Oregon. OWET emphasizes an inclusive, collaborative model to ensure
Oregon Wave Energy Trust
core   +6 more sources

The Transformation from Surface Wave into Radiation Wave Using Composite Subwavelength Holes Array

open access: yesAdvanced Photonics Research, 2022
Smith–Purcell radiation (SPR) is a phenomenon in that free electrons moving above a periodic structure deliver a part of their kinetic energies to electromagnetic waves.
Ping Zhang   +8 more
doaj   +1 more source

Surface waves and surface wave devices in atmospheric acoustics [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1990
Surface waves exist above porous grounds when the surface can influence the airborne particle velocity near the ground and reduce the phase velocity of sound waves in air at the surface, thereby trapping some of the energy to remain near the surface as the wave propagates. The experimental evidence for the existence of an acoustic surface wave has been
G. A. Daigle, T. F. W. Embleton
openaire   +1 more source

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