I SAW Technology 母 and Its Applications Prof. Shi Wenkang Shanghai Jiao Tong University PR CHINA [896
Prof. Shi Wenkang SAW Technology and Its Applications Shanghai Jiao Tong University P.R.CHINA
Outline Concept Materials Mathematic Model Type of SAW Device Typical Applications Development Tendency Research on sTu
Outline Concept Materials Mathematic Model Type of SAW Device Typical Applications Development Tendency Research on SJTU
Concent What iS saw? SAW----Surface Acoustic Wave 10 203 00 10 20 100
What is SAW ? SAW----Surface Acoustic Wave Concept
Concept: What is SAW? o Mechanical Wave AT o propagate in the surface Energy Concentrated in the thin layer (<1X) MATAO Different Modes RSAWLSAWLLSAW, SH-SAW Love Wave LAMB Wave moT O Much lower velocity than Electromagnetic Wave's (1: 105)
Concept: What is SAW? ⚫ Mechanical Wave ⚫ propagate in the surface Energy Concentrated in the thin layer (<1λ) ⚫ Different Modes: RSAW,LSAW,LLSAW, SH-SAW, Love Wave, LAMB Wave…. ⚫ Much lower velocity than Electromagnetic Wave’s (1: 105 )
Concept: Physical Principal Mm Based on 1. Piezoelectric effect and converse piezoelectric effect Mechanical Electrical 3x+> 2. Wave reflected at discontinuity media
Concept: Physical Principal Based on: 1. Piezoelectric effect and Converse Piezoelectric effect Mechanical Electrical 2. Wave reflected at discontinuity media