Title :
Nonlinear Surface Ultrasonic Monopulses in Solid Film~Substrate System
Author :
Grimalsky, V. ; Koshevaya, S. ; Gutierrez, E.-D. ; Garcia, A.-B.
Author_Institution :
National Inst. for Astrophys., Opt., & Electron., Puebla
Abstract :
An excitation of ultra-high frequency (100 MHz-1 GHz) nonlinear solitary acoustic waves, propagating along the interface between a solid film and a solid substrate, is theoretically analyzed. A quadratic elastic nonlinearity in both contacting media of the system is taken into account in the case of baseband waves. The Benjamin-Ono (B-O) type equation, due to the character of the linear wave dispersion, describes the baseband waves, but they are not true monopulse-like solitons and manifest as single shock-like pulses in the case of an excitation from the long initial rectangular pulse
Keywords :
acoustic wave propagation; surface acoustic waves; 0.1 to 1 GHz; Benjamin-Ono type equation; baseband waves; linear wave dispersion; nonlinear solitary acoustic waves; nonlinear surface ultrasonic monopulses; solid film; solid substrate; Acoustic propagation; Acoustic waves; Baseband; Frequency; Nonlinear equations; Optical surface waves; Solids; Solitons; Substrates; Surface acoustic waves;
Conference_Titel :
Microelectronics, 2006 25th International Conference on
Conference_Location :
Belgrade
Print_ISBN :
1-4244-0117-8
DOI :
10.1109/ICMEL.2006.1650955
