Risultati di ricerca
Received November 22, 2012; accepted February 27, 2013; published online June 20, 2013. The loss reduction of a longitudinal-type leaky surface acoustic wave (LLSAW) by loading with a dielectric thin film with a higher velocity than the substrate is proposed. An aluminum nitride (AlN) thin film was adopted as a high-velocity thin film, and the ...
20 giu 2013 · The loss reduction of a longitudinal-type leaky surface acoustic wave (LLSAW) by loading with a dielectric thin film with a higher velocity than the substrate is proposed. An aluminum nitride (AlN) thin film was adopted as a high-velocity thin film, and the propagation properties of an LLSAW on an X36°Y-LiNbO3 (LN) substrate were investigated. First, the elastic constants c11 and c44 of an ...
6 giu 2014 · The phase velocity, obtained by multiplying the center frequency of the measured frequency response by λ, was 7,300 m/s for a thickness of 0.250 λ (λ = 8.0 µm), less than that of 7,330 m/s for the sample without a film. The measured phase velocity for the sample without a film was higher than the phase velocity of 6,904 m/s obtained from ...
5 gen 2009 · Quantitative film thickness was obtained at two circumferential locations (90° and 270° from top dead centre) and three axial locations, through sophisticated analysis of the high speed images ...
with High Acoustic Velocity Stability for Film Thickness Variations. 1. Background. High performance SAW filters for RF communication using thin film multi-layered substrate are actively studied. High-Q, High-k, Low-TCF resonator achieves Low Loss filter. LiTaO3 (>1λ thickness)
1 mar 1992 · int. J. Heat Mass Transfer. Vol. 35, No. 3, pp. 683-689, 1992 Printed in Great Britain 17-9310/92 $5.00+0.00 Pergamon Press pic Heat transfer and film thickness during condensation of steam flowing at high velocity in a vertical pipef R. BELLINGHAUSEN and U. RENZ Lehrstuhl f Wmeertragung und Klimatechnik, RWTH Aachen, 5100 Aachen, Germany Abstractn the present study the heat transfer of pure ...
6 giu 2014 · 20) Furthermore, a wurtzite ScAlN having high piezoelectricity and high phase velocity has been fabricated from a layer structure consisting of a (0°, θ, ψ) Sc x Al 1−x N film and an X-cut ...
