Results 41 to 50 of about 102,704 (290)

Resonance Expansions and Rayleigh Waves [PDF]

open access: yesMathematical Research Letters, 2001
The author studies expansions of solutions of the wave equation in a compact set with initial data supported in the same set. He considers the general framework of the ``black box scattering'' introduced by Sjöstrand and Zworski. In particular, this includes the classical case of scattering by obstacle with Dirichlet or Neumann boundary conditions and ...
openaire   +1 more source

Rayleigh waves in symmetry planes of crystals: explicit secular equations and some explicit wave speeds [PDF]

open access: yes, 2012
Rayleigh waves are considered for crystals possessing at least one plane of symmetry. The secular equation is established explicitly for surface waves propagating in any direction of the plane of symmetry, using two different methods.
Destrade, Michel
core   +2 more sources

Weakly nonlocal Rayleigh waves in orthotropic half-spaces coated by an orthotropic layer with sliding contact

open access: yesVietnam Journal of Mechanics
In this paper, we study the propagation of Rayleigh waves in nonlocal orthotropic half-spaces coated by a nonlocal orthotropic layer with sliding contact using the weakly nonlocal elasticity model.
Pham Chi Vinh   +2 more
doaj   +1 more source

“Forbidden” planes for Rayleigh waves [PDF]

open access: yesQuarterly of Applied Mathematics, 2002
Summary: We discuss the existence of ``forbidden'' planes, on which Rayleigh waves cannot propagate. A mathematical model for anisotropic materials possessing ``forbidden'' planes is constructed, and an example of transversely isotropic material having ``forbidden'' planes is presented.
openaire   +2 more sources

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Method of Suppressing Rayleigh Waves Based on the Technology of Time-Domain Differential Detection

open access: yesApplied Sciences
Seismic exploration is widely used in shallow engineering applications, yet extracting reflected wave information remains challenging due to contamination from Rayleigh waves.
Debing Zhu   +4 more
doaj   +1 more source

Elucidating the Role of Surface Ligands on the Oxidative Etching of Au Bipyramids During Photothermia Using Liquid Cell Transmission Electron Microscopy

open access: yesAdvanced Functional Materials, EarlyView.
Gold bipyramids can act as efficient plasmonic nanoheaters, but they often reshape during laser heating. This study shows that oxygen nanobubbles drive oxidative etching and that surface ligands control stability. CTAB‐ and citrate‐coated particles blunt and lose optical performance, whereas polystyrene sulfonate preserves shape and heating by ...
Irene López‐Sicilia   +7 more
wiley   +1 more source

Approximate formula for the H/V ratio of Rayleigh waves in incompressible orthotropic half-spaces coated by a thin elastic layer

open access: yesVietnam Journal of Mechanics, 2017
This paper is concerned with the propagation of Rayleigh waves in an incompressible orthotropic elastic half-space coated with a thin incompressible orthotropic elastic layer.
Pham Chi Vinh   +2 more
doaj   +1 more source

Passive manipulation of low resonance scattering frequency associated with subsonic Rayleigh waves on submerged polymer spheres [PDF]

open access: yesMATEC Web of Conferences, 2019
Observation of the backscattering form function for a solid polymethylmeth-acrylate(PMMA) sphere reveals a significant enhancement at low frequencies, which is associated with the subsonic Rayleigh waves resonance.
Zhou Yanling, Fan Jun, Wang Bin
doaj   +1 more source

A Novel and Non-Invasive Approach to Evaluating Soil Moisture without Soil Disturbances: Contactless Ultrasonic System

open access: yesSensors, 2022
Soil moisture has been considered a key variable in governing the terrestrial ecosystem. However, it is challenging to preserve indigenous soil characteristics using conventional soil moisture monitoring methods that require maximum soil contacts.
Dong Kook Woo   +3 more
doaj   +1 more source

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