Results 11 to 20 of about 75,524 (303)

Ultra-broadband illusion acoustics for space and time camouflages. [PDF]

open access: yesNat Commun
Invisibility cloaks that can suppress wave scattering by objects have attracted a tremendous amount of interest in the past two decades. In comparison to prior methods that were severely limited by narrow bandwidths, here we present a practical strategy ...
Liu C, Ma C, Lai Y, Fang NX.
europepmc   +2 more sources

Ultra-Thin Metasurface-Based Absorber of Low-Frequency Sound With Bandwidth Optimization

open access: yesFrontiers in Materials, 2021
We report, both theoretically and experimentally, a type of ultra-thin metasurface-based low-frequency sound absorber with bandwidth optimization. Such a metasurface unit consists of an ultrathin resonator (thickness∼1/90 wavelength) with a circular hole
Yi-jun Guan   +9 more
doaj   +1 more source

Broadband Bidirectional and Multi-Channel Unidirectional Acoustic Insulation by Mode-Conversion Phased Units

open access: yesFrontiers in Materials, 2021
The technique of sound insulation has a wide range of potential applications in environment noise control and architectural acoustics. The rapid development of acoustic artificial materials has provided alternative solutions to design sound insulation ...
Jia-he Chen   +10 more
doaj   +1 more source

Magnetoelectric Properties of Ni-PZT-Ni Heterostructures Obtained by Electrochemical Deposition of Nickel in an External Magnetic Field

open access: yesMagnetochemistry, 2023
This paper studied the influence of external electric and magnetic fields on the magnetoelectric properties of layered structures of metal-piezoelectric-metal. The structures under study had the shape of a square 4 mm wide and were obtained in two steps:
Natalia Poddubnaya   +4 more
doaj   +1 more source

49th Winter School on Wave and Quantum Acoustics XLVIIIth Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, February 24–27, 2020

open access: yesArchives of Acoustics, 2020
49th Winter School on Wave and Quantum Acoustics constituted platforms for sharing the results and achievements obtained in different branches of physical acoustics, as molecular acoustics, quantum acoustics, acousto-optics, magnetoacoustics ...
Dariusz Bismor
doaj   +1 more source

Low-Frequency Dual-Band Sound Absorption by Ultrathin Planar Wall Embedded With Multiple-Cavity Resonators

open access: yesFrontiers in Physics, 2022
We report the numerical and experimental realization of a type of ultrathin planar wall with low-frequency dual-band sound absorption. The proposed planar wall is constructed by a periodic subwavelength unit cell (with a thickness of λ/19) which consists
Yu-wei Xu   +10 more
doaj   +1 more source

Vacancy-defect modulated pathway of photoreduction of CO2 on single atomically thin AgInP2S6 sheets into olefiant gas

open access: yesNature Communications, 2021
CO2 conversion driven by light is a promising strategy to synchronously overcome global warming and energy-supply issues. Here the authors show that the sulfur defect engineering on a quaternary AgInP2S6 atomic layer can excitingly change the CO2 ...
Wa Gao   +11 more
doaj   +1 more source

50th Jubilee Winter School on Wave and Quantum Acoustics XLIXth Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, 28 February – 3/4 March, 2022 [PDF]

open access: yesArchives of Acoustics, 2022
On behalf of Upper Silesian Division of the Polish Acoustical Society (main organizer) and Committee of Acoustics of the Polish Academy of Sciences (coorganizers) we are pleased to announce that according to many years of tradition the above-mentioned ...
doaj   +1 more source

Highly reproducible SERS substrate based on polarization-free Ag nanoparticles decorated SiO2/Si core-shell nanowires array

open access: yesAIP Advances, 2015
SiO2/Si core-shell nanowires array coated with gap-rich silver nanoparticles were demonstrated as a highly reproducible surface-enhanced Raman scattering (SERS) substrate.
Xiao-Ying Liu   +4 more
doaj   +1 more source

Broadband low-frequency sound absorption in open tunnels with deep sub-wavelength Mie resonators

open access: yesFrontiers in Physics, 2022
We report both experimentally and numerically that near-perfect absorption of low-frequency sound is realized in an open tunnel embedded with two deep sub-wavelength (0.085 λ) Mie resonators. The resonators are composed of a multiple-cavity structure and
Jianping Xia   +14 more
doaj   +1 more source

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