Results 101 to 110 of about 44,520 (308)

Spacer‐Less Substrate‐Integrated Metasurface for Near‐Unity Terahertz Absorption

Advanced Optical Materials, EarlyView.
ABSTRACT Although conventional metal‐insulator‐metal (MIM) terahertz (THz) absorbers can provide near‐unity absorption, their multilayer stacks inevitably introduce additional thickness, mass, and residual stress, which limit their compatibility with THz thermal sensing platforms.
Zihao Zhao, Kazuho Harada, Qian Liu, Isao Morohashi, Xu Fang, Kazuhiko Hirakawa, Ya Zhang   +6 more
wiley   +1 more source

Broadband noise prediction of trailing edge noise caused by a turbulent boundary layer using an Improved Delayed Detached Eddy Simulation (IDDES)

, 2009
International audienceNoise generated by a highly loaded (15 degree) and chambered NACA 5510 airfoil at a chord based Reynolds number of aprox. 1 million placed in a quiet parallel low Mach number flow (Ma = 0.2) is studied numerically using a novel ...
Greschner, Björn, Jacob, Marc, Grilliat, Julien, Thiele, Frank   +3 more
core   +2 more sources

Ultra-broadband acoustic absorber based on periodic acoustic rigid-metaporous composite array

Discover Applied Sciences
To address the increasingly serious issue of noise pollution, we propose an ultra-broadband, wide-angle acoustic absorber based on a periodic acoustic rigid-metaporous composite array.
Dongguo Zhang, Fei Sun, Yichao Liu
doaj   +1 more source

Efficacy of Sound Therapy for Tinnitus Using an Enriched Acoustic Environment with Hearing-Loss Matched Broadband Noise. [PDF]

Brain Sci, 2022
Cuesta M, Garzón C, Cobo P.
europepmc   +1 more source

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

On the relation between broadband noise and aerodynamic fan performance

, 2007
The influence of fan speed and fan loading on broadband noise has been experimentallyinvestigated in a low-speed scale fan rig. Based on the measurements, a simple semi-empiricalnoise model has been developed.
Moreau, A.,, Enghardt, L.,, Bodén, Hans,   +2 more
core  

Identification and attenuation of slat noise [PDF]

, 2012
In the case of civil transport aircraft, engines were the dominant noise source until the advent of the high-bypass ratio engines in the early 1970s. Since then, airframe noise has become more important, particularly during the approach-to-landing stage ...
Chen, Peng
core  

Ambient noise recorded by a dense broadband seismic deployment in Western Iberia

, 2014
© 2014, Bulletin of the Seismological Society of America. All rights reserved. The West Iberia Lithosphere and Asthenosphere Structure (WILAS) project densely covered Portugal with broadband seismic stations for 2 yrs.
Carvalho, S., Dias, N. A., Corela, C., Diaz, J., Madureira, G., Caldeira, Bento, Haberland, C., Carvalho, Sara, Narciso, J., Custódio, S., Matias, L., Dias, Nuno A., Carrilho, F., Caldeira, B.   +13 more
core   +1 more source

Acoustic Metasurface-Aided Broadband Noise Reduction in Automobile Induced by Tire-Pavement Interaction. [PDF]

Materials (Basel), 2021
Heo H, Sofield M, Ju J, Neogi A.
europepmc   +1 more source

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source