Study of Mechanical and Elastic Properties of Diamond Films by Surface Acoustic Wave Spectroscopy (SAWS)

1995 ◽  
Vol 383 ◽  
Author(s):  
R. Kuschnereit ◽  
P. Hess
Keyword(s):  
Surface Wave ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Elastic Properties ◽  
Diamond Films ◽  
Polycrystalline Diamond ◽  
Layered System ◽  
Uv Laser ◽  
Wave Pulse ◽  
Polycrystalline Diamond Film

ABSTRACTThe density and elastic properties of a 1.9 μm thick polycrystalline diamond film deposited on a silicon substrate were measured by surface acoustic wave (SAW) spectroscopy. A density of 3.45±0.05 g/cm3, Young's modulus of 940 ± 20 GPa and Poisson's ratio below 0.12 were determined from the dispersion of a broadband coherent surface acoustic wave pulse propagating in the layered system. The surface wave pulses were generated using a ns UV laser pulse and detected with a piezoelectric foil transducer.

scholarly journals Single-Electron Population and Depopulation of an Isolated Quantum Dot Using a Surface-Acoustic-Wave Pulse

2007 ◽  
Vol 98 (4) ◽  
Author(s):  
M. Kataoka ◽  
R. J. Schneble ◽  
A. L. Thorn ◽  
C. H. W. Barnes ◽  
C. J. B. Ford ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Single Electron ◽  
Electron Population ◽  
Wave Pulse

Nanocrystalline diamond films for surface acoustic wave devices

2006 ◽  
Vol 15 (2-3) ◽  
pp. 193-198 ◽  
Author(s):  
O. Elmazria ◽  
F. Bénédic ◽  
M. El Hakiki ◽  
H. Moubchir ◽  
M.B. Assouar ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Nanocrystalline Diamond Films ◽  
Acoustic Wave Devices

scholarly journals Surface acoustic wave temperature properties in alpha-GeO2 crystal

2021 ◽  
Vol 2131 (5) ◽  
pp. 052098
Author(s):  
R M Taziev
Keyword(s):  
Wave Propagation ◽  
Surface Wave ◽  
Acoustic Wave ◽  
Temperature Coefficient ◽  
Surface Acoustic Wave ◽  
Coupling Coefficient ◽  
Electromechanical Coupling ◽  
Propagation Direction ◽  
Electromechanical Coupling Coefficient ◽  
Wave Propagation Direction

Abstract In this study, the surface acoustic wave (SAW) temperature properties in flux-grown α-GeO2 crystal are numerically investigated. It is shown that the SAW velocity temperature change substantially depends only on the temperature coefficient of three elastic constants: C66, C44 and C14 for crystal cuts and wave propagation directions, where SAW has high electromechanical coupling coefficient. The SAW temperature coefficient of delay (TCD) for these crystal cuts are in the range from -40 ppm /°C to -70 ppm /°C. In contrast to alpha-quartz, the surface wave TCD values are not equal to zero in Z-, Y- , and Z- rotated cuts of α-GeO2 single crystal. Its values are comparable in the magnitude with the surface wave TCD values in lithium tantalate. In the crystal grown from the melt, the interdigital transducer (IDT) conductance has two times larger amplitude than that in hydrothermally grown a-GeO2. The leaky acoustic wave excited by IDT on Z+120°-cut and wave propagation direction along the X-axis, has an electromechanical coupling coefficient 5 times less than that for surface wave.

Improvements in surface-acoustic-wave pulse-compression filters

1973 ◽  
Vol 9 (7) ◽  
pp. 156 ◽  
Author(s):  
J.D. Maines ◽  
G.L. Moule ◽  
N.R. Ogg ◽  
G. Rich
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Pulse Compression ◽  
Wave Pulse
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