Results 21 to 30 of about 2,352,224 (278)

Manipulating guided wave radiation with integrated geometric metasurface

open access: yesNanophotonics, 2021
Metasurfaces have manifested unprecedented capabilities in manipulating light by subwavelength unit cells, facilitating the miniaturization and multifunctions of optical systems.
Fang Bin   +4 more
doaj   +1 more source

Guided solitary waves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1980
Transversely periodic solitary-wave solutions of the Boussinesq equations (which govern wave propagation in a weakly dispersive, weakly nonlinear physical system) are determined. The solutions for negative dispersion (e.g., gravity waves) are singular and therefore physically unacceptable. The solutions for positive dispersion (e.g., capillary waves or
openaire   +2 more sources

Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

open access: yesSensors, 2009
Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper.
Fucai Li   +3 more
doaj   +1 more source

Axial Stress Measurement of Steel Tubes Using Ultrasonic Guided Waves

open access: yesSensors, 2022
Axially loaded steel tubes are widely used as primary structural members in civil engineering structures. In this paper, a stress measurement method for axially loaded steel tubes is developed based on the linear relationship between the group velocity ...
Siyuan Zhu   +3 more
doaj   +1 more source

Propagation of Waves in Helical Wave Guides [PDF]

open access: yesJournal of Applied Physics, 1958
The field configuration near the conductors of a helical wave guide is obtained from the solution of the spatial-wave equation for a developed helix. This solution is first obtained for the case of tape conductors and then adapted to elliptical (including circular) conductors by conformal transformation.
openaire   +3 more sources

Theoretical Analysis of Plasmonic Modes in a Symmetric Conductor–Gap–Dielectric Structure for Nanoscale Confinement

open access: yesIEEE Photonics Journal, 2014
A hybrid plasmonic waveguide is considered as one of the most promising architectures for long-range subwavelength guiding. The objective of this paper is to present a theoretical analysis of plasmonic guided modes in a symmetric conductor–gap ...
Li Wei   +3 more
doaj   +1 more source

Needle Tip Detection Using Ultrasound Probe for Vertical Punctures: A Simulation and Experimental Study

open access: yesDiagnostics, 2022
Current ultrasound-guided punctures are difficult to perform as they are performed at an angle to the ultrasound image of the affected area, resulting in longer puncture times, lower success rates, and higher unexpected injury rates.
Yuusuke Tanaka   +5 more
doaj   +1 more source

Effect of Pipe Bends on the Low-Frequency Torsional Guided Wave Propagation

open access: yesArchives of Acoustics, 2020
Wave motion in pipe bends is much more complicated than that in straight pipes, thereby changing considerably the propagation characteristics of guided waves in pipes with bends.
Wenjun WU, Junhua WANG
doaj   +1 more source

Synthetic aperture guided wave imaging using a mobile sensor platform [PDF]

open access: yes, 2012
This oral session at conference looks at synthetic aperture guided wave imaging using a mobile sensor ...
Summan, Rahul   +4 more
core   +5 more sources

Shear-horizontal guided wave tomography [PDF]

open access: yes, 2022
The petrochemical industry’s pipe-network is increasingly suffering from corrosion-induced shutdowns and thus a quantitative measurement approach is vital for making adequate service-life predictions and to guarantee safety. At pipe-supports, access is
Zimmermann, Andreas Armin Ernst
core   +1 more source

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