Results 21 to 30 of about 12,608 (261)

In-Flight Calibration of GF-1/WFV Visible Channels Using Rayleigh Scattering

Remote Sensing, 2017
China is planning to launch more and more optical remote-sensing satellites with high spatial resolution and multistep gains. Field calibration, the current operational method of satellite in-flight radiometric calibration, still does not have enough ...
Xingfeng Chen, Jin Xing, Li Liu, Zhengqiang Li, Xiaodong Mei, Qiaoyan Fu, Yisong Xie, Bangyu Ge, Kaitao Li, Hua Xu   +9 more
doaj   +1 more source

Parameter optimization for Rayleigh–Mie lidar under different dust conditions for the landing area of Martian Tianwen-1

Earth and Planetary Physics
Mars is the terrestrial planet in the solar system that is closest to the Earth. Studying the atmospheric parameters of Mars and studying the evolutionary history of the Martian environment on this basis is helpful for people to discover signs of ...
KeXin Ming, Chong Wang, XiangHui Xue, JianFei Wu, TingDi Chen   +4 more
doaj   +1 more source

Comment on the article "Development of copper nanoparticles and their prospective use in the pharmaceutical sector” Vol. 6, Issue 2, 2023 by Tyagi et al.

Precision Nanomedicine, 2023
It is imperative to draw attention to the intrinsic properties of copper and and other metal nanoparticles and why they can be used in diagnostic imaging.
Dipanjan Pan
doaj   +1 more source

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

Accuracy of radar-based precipitation measurement: An analysis of the influence of multiple scattering and non-spherical particle shape

Earth and Planetary Physics, 2018
Two assumptions are typically made when radar echo signals from precipitation are analyzed to determine the micro-physical parameters of raindrops: (1) the raindrops are assumed to be spherical; (2) multiple scattering effects are ignored.
Hao Chen, JinHu Wang, Ming Wei, HongBin Chen   +3 more
doaj   +1 more source

Rayleigh–Brillouin scattering of carbon dioxide [PDF]

Optics Letters, 2014
The spectral lineshape of spontaneous Rayleigh-Brillouin scattering in CO2 is studied in a range of pressures. The spectrum is influenced by the bulk viscosity, which is a relaxation phenomenon involving the internal degrees of freedom of the molecule. The associated relaxation rates can be compared to the frequency shift of the scattered light, which ...
Gu, Z., Ubachs, W.M.G., van der Water, W.   +2 more
openaire   +5 more sources

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

Spectral Narrowing in Coherent Rayleigh Scattering [PDF]

Physical Review Letters, 2007
Spectral narrowing of the coherent Rayleigh scattering line shape in a room temperature CO(2) gas (2.5 x 10(23) m(-3)) with intense fields in the 10(15) W m(-2) range is observed. The line shape saturates to a width of approximately half that observed at low pump intensities and indicates a transition from scattering primarily from untrapped molecules ...
Bookey, HT, Shneider, MN, Barker, PF
openaire   +3 more sources

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

Forward and Inverse Studies on Scattering of Rayleigh Wave at Surface Flaws

Applied Sciences, 2018
The Rayleigh wave has been frequently applied in geological seismic inspection and ultrasonic non-destructive testing, due to its low attenuation and dispersion.
Bin Wang, Yihui Da, Zhenghua Qian
doaj   +1 more source