Patent ID: 8038337
Filing Date: 2011-10-18
Classification: B01F,B01L

Abstract:
1. A method for thoroughly mixing liquids in a microcavity, comprising the steps of providing said microcavity on one side of a solid-body layer, arranging an interdigital transducer on a piezoelectric crystal, providing said piezoelectric crystal below said solid body layer opposite the side on which said microcavity is provided, generating an ultrasound wave of a frequency greater than or equal to 10 MHz from said interdigital transducer, such that said ultrasound wave is generated as a surface wave at the surface of said piezoelectric crystal and is then transformed into a bulk acoustic wave within said solid-body layer, and wherein said bulk acoustic wave travels through said solid-body layer to the opposite side of said solid-body layer on which said microcavity is provided, and providing said solid-body layer to have a dimension, in the direction of sound propagation, which is greater than ¼ of the wavelength of the ultrasound wave, for generating a sound-induced flow in said microcavity.