Results 11 to 20 of about 111,624 (264)

Time-Domain Behavior of Plasmonic Half-Spaces

open access: yesIEEE Photonics Journal, 2012
The time-domain surface impedance for a plane-wave incidence on a half-space with conductive and plasmonic properties is theoretically investigated. This paper provides closed-form time-domain expressions of time-domain surface impedance values that can ...
M. Stumpf, G. A. E. Vandenbosch
doaj   +1 more source

Electromagnetic scattering of H‐polarised cylindrical wave by a double‐sided impedance circular strip

open access: yesIET Microwaves, Antennas & Propagation, 2023
The authors investigate electromagnetic scattering by a circular strip with impedance boundary conditions in detail. The excitation is obtained by the H‐polarised line source and the impedance boundary condition with different impedance values on each ...
Vasil Tabatadze   +2 more
doaj   +1 more source

Contactless Waveguide Characterization of Piezoresistive Materials for Wireless Strain Sensors

open access: yesSensors, 2022
Stretchable materials are widely used for the realization of various sensors, but their radio frequency behavior has not been fully characterized so far. Here, an innovative method is proposed for deriving the surface impedance of this kind of materials.
Sandra Rodini   +3 more
doaj   +1 more source

Direction-of-arrival estimation with blind surface impedance compensation for spherical microphone array [PDF]

open access: yesJASA Express Letters, 2021
The direction-of-arrival (DoA) estimation from spherical microphone array data requires mode strength compensation for removing the dependency on the array surface impedance.
Dongheon Lee, Byeongho Jo, Jung-Woo Choi
doaj   +1 more source

Impact of Superconductors’ Properties on the Measurement Sensitivity of Resonant-Based Axion Detectors

open access: yesInstruments, 2021
Axions, hypothetical particles theorised to solve the strong CP problem, are presently being considered as strong candidates for cold dark matter constituents.
Andrea Alimenti   +5 more
doaj   +1 more source

Performance Enhancement in Compact Inverted-L Antenna by Using 1-D EBG Ground Structures and Beam Directors

open access: yesIEEE Access, 2019
This paper describes a compact inverted-L antenna (ILA) topology that can enhance antenna performance by utilizing one-dimensional electromagnetic bandgap (1-D EBG) ground structures and two-stage beam directors.
Jae-Yeong Lee   +3 more
doaj   +1 more source

Analysis of Nano-Wires at Terahertz and Optical Frequencies Using Surface Impedance Models [PDF]

open access: yesAUT Journal of Electrical Engineering, 2021
Different surface impedance models are applied to circular nano-wires at terahertz and optical frequencies and the accuracy of these surface impedance boundary conditions (SIBCs) is studied.
Alireza Gholipour
doaj   +1 more source

Adaptive Variable-Damping Impedance Control for Unknown Interaction Environment

open access: yesMathematics, 2023
Aiming at the force-tracking error phenomenon of impedance control in an unknown surface environment, an adaptive variable-damping impedance control algorithm is proposed, and the stability and convergence of the algorithm are deduced.
Dawei Gong   +5 more
doaj   +1 more source

Relationships between in vivo surface and ex vivo electrical impedance myography measurements in three different neuromuscular disorder mouse models

open access: yesPLoS ONE, 2021
Electrical impedance myography (EIM) using surface techniques has shown promise as a means of diagnosing and tracking disorders affecting muscle and assessing treatment efficacy.
Sarbesh R. Pandeya   +6 more
doaj   +2 more sources

On the Reflection of a Spherical Sound Wave from a Finite Size Surface

open access: yesApplied Sciences
Room acoustics computer models based on geometrical acoustics usually handle the sound reflections by the assumption of plane waves. However, if the sound source is a point source, which is usually the case, the spherical wave reflection would be more ...
Jens Holger Rindel
doaj   +1 more source

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