Explanation
surface acoustic wave (SAW) is a mechanical wave, which is an ultrasonic wave propagating through the solid surface. SAW is a kind of elastic wave, whose vibration is transmitted through the surface of a solid rather than through the interior of a material, so it has unique characteristics and applications. The generation and propagation of SAW typically rely on the use of piezoelectric effects. Specifically, when the voltage is applied to the piezoelectric crystal, mechanical stress will be generated, resulting in small displacement of the crystal surface. These small displacements propagate on the surface of crystal and form surface acoustic wave
Classification
Fundamental of Material Science -> Physical and chemical basis of materials