Zobrazeno 1 - 10
of 157
pro vyhledávání: '"F.S. Hickernell"'
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 42:351-361
A potential application for piezoelectric films on GaAs substrates is the monolithic integration of surface acoustic wave (SAW) devices with GaAs electronics. Knowledge of the SAW properties of the layered structure is critical for the optimum and ac
Publikováno v:
Journal of Applied Physics. 75:7299-7303
GaAs has been employed as a material for acoustic charge transport (ACT) devices principally because it is a piezoelectric semiconductor. However, because GaAs is a weakly piezoelectric material, the surface acoustic wave (SAW) interdigital transduce
Autor:
F.S. Hickernell
Publikováno v:
2008 IEEE International Frequency Control Symposium.
Permanent acoustic bonding agents are important for affixing transducers to acoustic materials. They are used for electronic, industrial, medical, and research applications. An important research aspect has been the characterization of permanent and
Autor:
F.S. Hickernell, T.S. Hickernell
Publikováno v:
2007 IEEE Ultrasonics Symposium Proceedings.
Several tests have been used over the years to determine the quality of thin film zinc oxide. These tests have included coupling factor measurement, acoustic and optical loss, surface roughness, and grain size. One such test, which is especially usef
Autor:
F.S. Hickernell
Publikováno v:
2006 IEEE International Frequency Control Symposium and Exposition.
The bond integrity between optically bonded fused quartz blocks has been evaluated using ultrasonic waves in the frequency range from 200 MHz to 800 MHz. The ultrasonic waves were produced by thin-film zinc oxide (ZnO) transducers. By excitation of t
Autor:
F.S. Hickernell
Publikováno v:
IEEE Ultrasonics Symposium, 2005..
Evaluating sputtered ZnO thin film piezoelectric transducers for bulk wave applications has included a wide variety of techniques such as structural, electrical, and insertion loss measurements. The actual excitation, propagation, and detection of ul
Publikováno v:
Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005..
Rigorous, full-field theory of single-phase interdigital transducers is presented and extended, by perturbation analysis, to account for the mechanical properties of strips. The theory and its resulting closed-form expressions are general and applica
Autor:
F.S. Hickernell
Publikováno v:
International Symposium on and National Conference on Acoustoelectronics. Program and Abstracts Surface Waves in Solid and Layered Structures.
Autor:
F.S. Hickernell
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 52(5)
In December of 1968 Jeffrey Bleustein of Yale University published an article predicting the existence of a new type of transverse surface acoustic wave (SAW) that could propagate on the surface of a piezoelectric crystal. This was followed within 20
Autor:
D.E. Allen, F.S. Hickernell
Publikováno v:
MTT-S International Microwave Symposium Digest.
The rapid advancement of Surface Acoustic Wave (SAW) technology in recent years has significantly impacted the design of several microwave systems. In particular, current systems having IF or processing frequencies in the 100-1000 MHz range are likel