Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1063/1.4943945
Ключевые слова: Acoustic wave propagation, Acoustic waves, Diamonds, Frequency response, Piezoelectricity, Surface waves, Ultrasonic waves, Acoustical signals, Amplitude frequency response, Dispersion curves, Dispersive curves, Elastic displacements, FEM analysis, Lamb modes, Layered Structures, Dispersion (waves)
Аннотация: The presence of spurious peaks in the amplitude-frequency response of diamond based piezoelectric layered structure was shown. Excitation of such peaks results in deterioration of an useful acoustical signal. It was shown that such spurious peaks should be associated with Lamb waves in a layered structure. By means of FEM analysis,Показать полностьюthe propagation of acoustic waves of different types in the piezoelectric layered structure "Al/AlN/Mo/(100) diamond" has been investigated in detail. By analyzing the elastic displacement patterns at frequencies from 0 up to 250 MHz, a set of all the possible acoustic waves, especially Lamb modes, have been studied, and dispersive curves of phase velocity have been plotted. A revised classification of Lamb modes has been introduced. (C) 2016 AIP Publishing LLC.
Журнал: APPLIED PHYSICS LETTERS
Выпуск журнала: Vol. 108, Is. 11
ISSN журнала: 00036951
Место издания: MELVILLE
Издатель: AMER INST PHYSICS