Results 121 to 130 of about 142,733 (169)
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Physical Review, 1941
In recent years considerable interest has developed'1 among chemists and physicists in the determination of the velocity of sound in liquids by means of high fre¬quency sound waves. These measurements are valuable for our knowledge of molecular properties.
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In recent years considerable interest has developed'1 among chemists and physicists in the determination of the velocity of sound in liquids by means of high fre¬quency sound waves. These measurements are valuable for our knowledge of molecular properties.
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Nonlinear magneto-acoustic waves in ferromagnets
Journal of Applied Physics, 1996The nonlinear coherent interaction of a high-frequency acoustic wave pulse with a magnetically ordered medium is studied theoretically. We consider both microscopic and phenomenological theories of the formation of nonlinear magneto-acoustic waves in a ferromagnet.
A. A. Maradudin, G. T. Adamashvili
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International Journal of Acoustics and Vibration
A locally resonant (LR) thermo-magneto-mechanical (TMM) phononic crystal (PC) double-layer nanobeam is presented, which is achieved by periodically attaching "vertical spring-precompressed horizontal spring-additional spring-mass" resonators onto the ...
Litao Zhou +7 more
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A locally resonant (LR) thermo-magneto-mechanical (TMM) phononic crystal (PC) double-layer nanobeam is presented, which is achieved by periodically attaching "vertical spring-precompressed horizontal spring-additional spring-mass" resonators onto the ...
Litao Zhou +7 more
semanticscholar +1 more source
Damping of nonlinear magneto-acoustic waves
Journal of Plasma Physics, 1978Nonlinear magneto-acoustic waves in a turbulent plasma are simulated by collisional MHD equations. Damping of these waves due to electrical conductivity arising from micro-instabilities and collisional viscosity are analyzed. Numerical investigation of competing effects due to non-linearity and dissipation has been carried out.
V. B. Bhatia, G. L. Kalra
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Magneto-acoustic oscillations in a toroidal plasma [PDF]
Plasma Physics, 1978 Toroidal effects on forced axisymmetric magneto-acoustic oscillations in a conventional Tokamak plasma are investigated to first order in the inverse aspect ratio, using dissipative magnetohydrodynamic theory. It is shown that toroidal effects give rise to poloidally asymmetric components but magneto-acoustic resonance is still obtained and it is ...
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Magneto-Acoustic Waves in a Plasma
The Physics of Fluids, 1963The propagation of plane magneto-acoustic waves in a highly conducting plasma is examined, and the results are applied to magneto-acoustic pulsations of a cylindrical configuration. (C.E.S.)
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Magneto-acoustic oscillations in thallium
Physics Letters, 1962Longitudinal sound wave transmission measurements were made nt frequencies up to 270 Mc/s in a single crystal of thallium. The resulting dimensions of the Fermi surface are compared with the predictions of the free electron model. The agreement is very good if a sirgle zone scheme is used, demonstrating the importance of spin-orbit effects on the band ...
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Magneto-acoustic imaging by continuous-wave excitation
Medical & Biological Engineering & Computing, 2016The electrical characteristics of tissue yield valuable information for early diagnosis of pathological changes. Magneto-acoustic imaging is a functional approach for imaging of electrical conductivity. This study proposes a continuous-wave magneto-acoustic imaging method.
Yin Tao +3 more
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Magneto-acoustic phonon antiresonances in Wannier–Stark superlattices
Solid-State Electronics, 1998We have measured the hopping current of electrons magnetically confined in a 1D superlattice. We find that phonon assisted hopping between Wannier–Stark states vanishes at hopping energies where the momentum of an LA phonon mode satisfies the condition of Bragg reflection in the superlattice. This effect proves that, even in the presence of an external
J. C. Portal +9 more
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Towards Magneto-Acoustic Oscillators
2017Spin torque oscillators (STO) were developed in 2003 and since then great progress has been made in understanding their underlying physics, frequency of operation, frequency tuning range, and functionality. These nanoscale oscillators with their octave spanning frequency tuning range have been touted for many applications including neuromorphic ...
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