Results 41 to 50 of about 191,841 (293)
Acoustic ground impedance meter [PDF]
, 1984 A method and apparatus are presented for measuring the acoustic impedance of a surface in which the surface is used to enclose one end of the chamber of a Helmholz resonator. Acoustic waves are generated in the neck of the resonator by a piston driven by
Zuckerwar, A. J.
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Asteroseismic effects in close binary stars [PDF]
, 2013 Turbulent processes in the convective envelopes of the sun and stars have been shown to be a source of internal acoustic excitations. In single stars, acoustic waves having frequencies below a certain cutoff frequency propagate nearly adiabatically and ...
Shaviv, Nir J., Springer, Ofer M.
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Advanced Functional Materials, EarlyView.Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco +7 more
wiley +1 more source
Surface Acoustic Waves on Semiconductors [PDF]
, 1990 The paper is concerned with a discussion of SAW properties on semiconductor substrates. Some applications are briefly highlighted.Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych ...
Buff, Werner
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Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems
Advanced Functional Materials, EarlyView.MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley +1 more source
Plasmonic lattice excitation of surface acoustic waves in silicon photonic circuits
APL PhotonicsSurface acoustic waves enable long group delays and narrowband analog filtering on-chip, which are difficult to obtain with fast-moving electromagnetic waves.
Leroy Dokhanian +6 more
doaj +1 more source
Determination of structure ordering parameters in subsurface layers of condensed state materials by AMD-methods [PDF]
MATEC Web of Conferences, 2020 The results of studies of solid-state materials using AMD-methods are presented. It is shown that, regardless of the type of structure of the studied materials and their nature, acoustic waves provide subsurface images.
Kustov Alexander +3 more
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Coupling light into graphene plasmons through surface acoustic waves [PDF]
, 2013 We propose a scheme for coupling laser light into graphene plasmons with the help of electrically generated surface acoustic waves. The surface acoustic wave forms a diffraction grating which allows to excite the long lived phonon-like branch of the ...
Calle, Fernando +4 more
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Advanced Functional Materials, EarlyView.The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li +12 more
wiley +1 more source
New Journal of Physics, 2018 We consider the propagation and mode conversion of flexural-acoustic waves along a fluid-loaded graded array of elastic resonators, forming a metasurface.
E A Skelton +3 more
doaj +1 more source