Results 281 to 290 of about 3,306,688 (343)
Some of the next articles are maybe not open access.
1992
Abstract Synopsis. Acoustic waves will propagate in any medium that possesses some form of elasticity. In solids, which have both a bulk modulus (the reciprocal of the compressibility) and a shear modulus (or rigidity) wave propagation is complex, involving both longitudinal and transverse waves.
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Abstract Synopsis. Acoustic waves will propagate in any medium that possesses some form of elasticity. In solids, which have both a bulk modulus (the reciprocal of the compressibility) and a shear modulus (or rigidity) wave propagation is complex, involving both longitudinal and transverse waves.
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Localization of acoustic waves
Physical Review B, 1985The localization of sound waves moving in a random array of hard scatterers is studied for both two- and three-dimensional systems using a diagrammatic technique. For d=2 acoustic waves are found to be localized for all frequencies with the localization length growing exponentially for both high and low frequencies.
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Canadian Journal of Physics, 1962
The spectrum of the gravity and acoustical waves are discussed for two general types of models of the atmosphere. The main emphasis is placed upon the discrete set of modes which are important in the propagation of energy, long distances around the earth, from large explosions in the atmosphere.
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The spectrum of the gravity and acoustical waves are discussed for two general types of models of the atmosphere. The main emphasis is placed upon the discrete set of modes which are important in the propagation of energy, long distances around the earth, from large explosions in the atmosphere.
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The Journal of the Acoustical Society of America, 2007
A surface acoustic wave element includes a thin film electrode composed of monocrystal aluminum disposed on a piezoelectric substrate. At least one metal of Cu, Ta, W, and Ti is segregated in the thin film electrode composed of monocrystal aluminum. In this surface acoustic wave element, segregation of Cu or the like occurs in the thin film electrode ...
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A surface acoustic wave element includes a thin film electrode composed of monocrystal aluminum disposed on a piezoelectric substrate. At least one metal of Cu, Ta, W, and Ti is segregated in the thin film electrode composed of monocrystal aluminum. In this surface acoustic wave element, segregation of Cu or the like occurs in the thin film electrode ...
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The Journal of the Acoustical Society of America, 2005
An acoustic wave device including an electrical element disposable on an outer contour of a support of an acoustic wave transducer, the outer contour having a non-cylindrical and non-flat shape, the electrical element being areally configured on the outer contour for radiating acoustic waves outwardly from the outer contour.
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An acoustic wave device including an electrical element disposable on an outer contour of a support of an acoustic wave transducer, the outer contour having a non-cylindrical and non-flat shape, the electrical element being areally configured on the outer contour for radiating acoustic waves outwardly from the outer contour.
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The Journal of the Acoustical Society of America, 1987
The invention is an improvement to the linear array transducer and the annular array transducer. The improvement lies in the invention's capability to produce a phase shifted wave across each segment of the composite transducer and in so doing, better match the ideal phase shift for aiming or focussing acoustic waves.
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The invention is an improvement to the linear array transducer and the annular array transducer. The improvement lies in the invention's capability to produce a phase shifted wave across each segment of the composite transducer and in so doing, better match the ideal phase shift for aiming or focussing acoustic waves.
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The Journal of the Acoustical Society of America, 2013
An acoustic wave device includes: a piezoelectric film made of an aluminum nitride film containing a divalent element and a tetravalent element, or a divalent element and a pentavalent element; and an electrode that excites an acoustic wave propagating through the piezoelectric film.
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An acoustic wave device includes: a piezoelectric film made of an aluminum nitride film containing a divalent element and a tetravalent element, or a divalent element and a pentavalent element; and an electrode that excites an acoustic wave propagating through the piezoelectric film.
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Physics Bulletin, 1983
Acoustic waves have many similarities to light waves. They can be reflected, refracted, diffracted and focused.
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Acoustic waves have many similarities to light waves. They can be reflected, refracted, diffracted and focused.
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Acoustic Wave Filter Technology–A Review
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2017C. Ruppel
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Nonreciprocity in acoustic and elastic materials
Nature Reviews Materials, 2020Hussein Nassar +2 more
exaly