Results 51 to 60 of about 111,849 (294)

Surface Crack Monitoring by Rayleigh Waves with a Piezoelectric-Polymer-Film Ultrasonic Transducer Array

Sensors, 2023
This paper presents a method for measuring surface cracks based on the analysis of Rayleigh waves in the frequency domain. The Rayleigh waves were detected by a Rayleigh wave receiver array made of a piezoelectric polyvinylidene fluoride (PVDF) film and ...
Xiaotian Li, Voon-Kean Wong, Yasmin Mohamed Yousry, David Boon Kiang Lim, Percis Teena Christopher Subhodayam, Kui Yao, Liuyang Feng, Xudong Qian, Zheng Fan   +8 more
doaj   +1 more source

Verification of the Rayleigh Scattering Cross Section [PDF]

, 2007
A simple experiment is described for the direct determination of the wavelength dependence of the Rayleigh scattering cross section using the classical example of the blue sky.Comment: 3 pages, 2 figures, submitted to ...
Chakraborti, Sayan
core   +2 more sources

Quantum theory of Rayleigh scattering

Optics Express, 2021
We suggest a quantum description of Rayleigh light scattering on atoms. We show that an entangled state of the excited atom and the incident photon is formed during the scattering. Due to entanglement, a photon is never completely absorbed by the atom.
A. P. Vinogradov, V. Yu. Shishkov, I. V. Doronin, E. S. Andrianov, A. A. Pukhov, A. A. Lisyansky   +5 more
openaire   +3 more sources

Fluorescent Nanosensor for Indole‐3‐Propionic Acid Detection in Gut Health Monitoring

Advanced Healthcare Materials, EarlyView.
This work introduces a fluorescent nanosensor system with two optical modalities for detection of indole‐3‐propionic acid (IPA) gut metabolite: (1) blue‐emitting cationic conjugated polyelectrolyte (CP3) and (2) near‐infrared (NIR)‐emitting CP3‐wrapped single‐walled carbon nanotube (SWNT).
Mervin Chun‐Yi Ang, Jonathan Wei Jie Lee, Sayyid Mohaideen, Gabriel Sánchez‐Velázquez, Song Wang, Yangyang Han, Liu Lin, Germaine Yong, Raju Cheerlavancha, Duc Thinh Khong, Jianhong Ching, Sharon Hong Yu Han, Jun Yu Yeo, Lian Xu, Gajendra Pratap Singh, Michael S. Strano   +15 more
wiley   +1 more source

Subcritical scattering from buried elastic sphere based on subsonic Rayleigh waves

Journal of Ocean Engineering and Science
This study investigates the scattering characteristics of a buried elastic sphere under plane wave subcritical incidence at low-frequency. As the penetrating wave in sediment at subcritical angles transitions to an evanescent wave, it decays along the ...
Bing Li, Jun Fan, Bin Wang, Kaiqi Zhao, Liwen Tan   +4 more
doaj   +1 more source

Momentum Halo in The Rayleigh Scattering by a Bose–Einstein Condensate

Atoms, 2022
A ring of radius ℏk0 in the momentum distribution of a Bose–Einstein condensate is visible when the atoms scatter a single photon. Here, we describe an approximated theory of this effect, leading to an analytic expression of the isotropic momentum ...
Nicola Piovella
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

CANCELLATION OF THE COUNTER CHANNELS EFFECTS IN DUPLEX SINGLE-FIBER OPTICAL PATHS WITHOUT WAVELENGTH DIVISION MULTIPLEXING

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
An analysis of the Rayleigh scattering effect on the work of duplex single-fiber optical path without wavelength division multiplexing of counter channels using heterodyne detection was made in this paper. Characteristics of the Rayleigh scattering noise
V. N. Uryadov, Y. V. Roshchupkin, V. Y. Bunas, A. S. Zelenin   +3 more
doaj  

Non-Rayleigh scattering behavior for anisotropic Rayleigh particles [PDF]

Optics Letters, 2012
Derived from the light scattering by a radially anisotropic sphere, unusual scattering behavior is exhibited, which breaks the Rayleigh law (scattering efficiency Q(sca)~q(4) as q→0, where q is the size parameter). Under certain conditions, we demonstrate an asymptotical relation between Q(sca) and q, i.e., Q(sca)=Fq(8), which is not realizable for ...
Ni, Y. X., Gao, L., Miroshnichenko, Andrey, Qiu, C. W.   +3 more
openaire   +3 more sources

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source