Results 1 to 10 of about 120 (116)

NONLINEAR ACOUSTICS AND SOLID STATE PHYSICS

open access: yesJournal De Physique Colloque, 1979
In addition to mathematical advances and very promising practical applications, the study of Nonlinear Acoustics now is leading to fundamental advances in Solid State Physics. Nonlinear distortion of an ultrasonic wave in a solid is controlled by a nonlinearity parameter which is a function of the third-order elastic (TOE) constants as well as the ...
M A Breazeale
exaly   +3 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

A monolithic three-dimensional thermal convective acoustic vector sensor with acoustic-transparent heat sink [PDF]

open access: yesJASA Express Letters, 2022
An acoustic vector sensor can directly detect acoustic particle velocity based on the measured temperature difference between closely spaced heated wires.
Xiang-Yuan Xu   +8 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

Acoustic analogs for solving problems in solid-state physics [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1990
A basic problem in theoretical solid-state physics is to solve the Schrödinger equation for an electron in the scattering field of some very large number of ions, which is certainly a formidable problem. Fortunately, for a crystal the scattering field is periodic, and one may use Bloch's theorem and obtain a manageable calculation.
J. D. Maynard, M. J. McKenna
openaire   +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

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