High‐resolution spectroscopy for optical probing of continuously generated surface acoustic waves

1973 ◽  
Vol 44 (1) ◽  
pp. 1-4 ◽  
Author(s):  
P. J. Vella ◽  
G. I. A. Stegeman ◽  
M. Zuliani ◽  
V. M. Ristic
Keyword(s):  
High Resolution ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
High Resolution Spectroscopy ◽  
Optical Probing

Enhanced optical probing of surface acoustic waves

1990 ◽  
Author(s):  
Truman D. Black ◽  
V. A. Komotskii ◽  
Don A. Larson
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Optical Probing

APPLYING SURFACE ACOUSTIC WAVES TECHNIQUE FOR FILM ADHESIVENESS DETERMINATION

2009 ◽  
Vol 16 (02) ◽  
pp. 287-290 ◽  
Author(s):  
X. Y. YOU ◽  
XIA XIAO
Keyword(s):  
Elastic Modulus ◽  
High Resolution ◽  
Thin Layer ◽  
Product Quality ◽  
Theoretical Approach ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Spring Model ◽  
Key Factor

Layered film structures are widely applied. The adhesiveness of thin layer, which controls the product quality, is a key factor to be known. The possibility of applying the surface acoustic waves (SAWs) technique to determine the adhesiveness quality of film and substrate is explored by a theoretical approach, where the interface adhesiveness is modeled by the spring model. Numerical results show that the proposed SAWs technique has a high resolution on determining the interface adhesiveness. Meanwhile, SAWs can also be applied to detect the parameters of film such as the elastic modulus, thickness, density, and Poisson's ratio nondestructively.

Optical probing of surface acoustic waves

1970 ◽  
Vol 58 (12) ◽  
pp. 1939-1947 ◽  
Author(s):  
E.G.H. Lean ◽  
C.G. Powell
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Optical Probing

Microcalorimeters for X-Ray Spectroscopy

1988 ◽  
Vol 102 ◽  
pp. 41
Author(s):  
E. Silver ◽  
C. Hailey ◽  
S. Labov ◽  
N. Madden ◽  
D. Landis ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Thermal Response ◽  
Low Noise ◽  
High Resolution Spectroscopy ◽  
Superconducting Transition ◽  
Sapphire Substrates ◽  
Laboratory Plasmas ◽  
Adiabatic Demagnetization ◽  
Theoretical Predictions

The merits of microcalorimetry below 1°K for high resolution spectroscopy has become widely recognized on theoretical grounds. By combining the high efficiency, broadband spectral sensitivity of traditional photoelectric detectors with the high resolution capabilities characteristic of dispersive spectrometers, the microcalorimeter could potentially revolutionize spectroscopic measurements of astrophysical and laboratory plasmas. In actuality, however, the performance of prototype instruments has fallen short of theoretical predictions and practical detectors are still unavailable for use as laboratory and space-based instruments. These issues are currently being addressed by the new collaborative initiative between LLNL, LBL, U.C.I., U.C.B., and U.C.D.. Microcalorimeters of various types are being developed and tested at temperatures of 1.4, 0.3, and 0.1°K. These include monolithic devices made from NTD Germanium and composite configurations using sapphire substrates with temperature sensors fabricated from NTD Germanium, evaporative films of Germanium-Gold alloy, or material with superconducting transition edges. A new approache to low noise pulse counting electronics has been developed that allows the ultimate speed of the device to be determined solely by the detector thermal response and geometry. Our laboratory studies of the thermal and resistive properties of these and other candidate materials should enable us to characterize the pulse shape and subsequently predict the ultimate performance. We are building a compact adiabatic demagnetization refrigerator for conveniently reaching 0.1°K in the laboratory and for use in future satellite-borne missions. A description of this instrument together with results from our most recent experiments will be presented.

Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

1975 ◽  
Vol 33 ◽  
pp. 86-87
Author(s):  
Kemining W. Yeh ◽  
Richard S. Muller ◽  
Wei-Kuo Wu ◽  
Jack Washburn
Keyword(s):  
Integrated Circuit ◽  
Acoustic Waves ◽  
New Technology ◽  
Surface Acoustic Waves ◽  
Electromechanical Properties ◽  
Leading Role ◽  
Saw Devices ◽  
Transmission Electron ◽  
High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

Attenuation of surface acoustic waves by quantum dots

1998 ◽  
Vol 77 (5) ◽  
pp. 1195-1202
Author(s):  
Andreas Knabchen Yehoshua, B. Levinson, Ora
Keyword(s):  
Quantum Dots ◽  
Acoustic Waves ◽  
Surface Acoustic Waves
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