Results 51 to 60 of about 2,693,775 (331)

Emerging beam resonances in atom diffraction from a reflection grating [PDF]

open access: yes, 2010
We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment.
Bum Suk Zhao   +3 more
core   +2 more sources

Nonlocal scale effect on Rayleigh wave propagation in porous fluid-saturated materials

open access: yesInternational Journal of Mechanical Sciences, 2018
In this paper, a Rayleigh wave model in fluid saturated porous materials based on a nonlocal Biot theory is proposed. The general characteristic equations expressed in terms of the Rayleigh wavenumbers are obtained.
L. Tong   +4 more
semanticscholar   +1 more source

Radiation from structured-ring resonators [PDF]

open access: yes, 2017
We investigate the scalar-wave resonances of systems composed of identical Neumann-type inclusions arranged periodically around a circular ring. Drawing on natural similarities with the undamped Rayleigh-Bloch waves supported by infinite linear arrays ...
Craster, RV, Maling, B, Schnitzer, O
core   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

open access: yesAdvanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang   +18 more
wiley   +1 more source

Development of attenuation and diffraction corrections for linear and nonlinear Rayleigh surface waves radiating from a uniform line source

open access: yesAIP Advances, 2016
In recent studies with nonlinear Rayleigh surface waves, harmonic generation measurements have been successfully employed to characterize material damage and microstructural changes, and found to be sensitive to early stages of damage process.
Hyunjo Jeong   +3 more
doaj   +1 more source

Higher harmonic generation of Rayleigh wave at debondings in FRP-retrofitted concrete structures

open access: yesSmart materials and structures (Print), 2018
The use of ultrasonic nonlinearity for damage detection and monitoring of structures has attracted growing attention. Interaction of guided waves with contact-type damage, such as debonding, is one of the major sources of ultrasonic nonlinearity.
H. Mohseni, Ching-Tai Ng
semanticscholar   +1 more source

Formation of a disc gap induced by a planet: Effect of the deviation from Keplerian disc rotation [PDF]

open access: yes, 2015
The gap formation induced by a giant planet is important in the evolution of the planet and the protoplanetary disc. We examine the gap formation by a planet with a new formulation of one-dimensional viscous discs which takes into account the deviation ...
Kanagawa, Kazuhiro D.   +4 more
core   +2 more sources

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson   +3 more
wiley   +1 more source

S wave velocity structure below central Mexico using high-resolution surface wave tomography [PDF]

open access: yes, 2010
Shear wave velocity of the crust below central Mexico is estimated using surface wave dispersion measurements from regional earthquakes recorded on a dense, 500 km long linear seismic network.
Clayton, R. W.   +6 more
core   +1 more source

Switchable Thermal Mid‐IR Conducting Polymer Antenna Arrays

open access: yesAdvanced Functional Materials, EarlyView.
This study presents switchable mid‐infrared plasmonic resonances in PEDOT antenna arrays. Their optical extinction peaks can be reversibly switched ‘OFF’ and ‘ON’ by tuning the polaronic charge carrier concentration via the polymer's redox state, offering modulation of optical responses in the thermal mid‐infrared range including around 10 µm ...
Pravallika Bandaru   +5 more
wiley   +1 more source

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