DEVICE AND METHOD FOR MANIPULATING PARTICLES UTILIZING SURFACE ACOUSTIC WAVES

摘要

The present invention provides a device and a method for particle manipulation utilizing interface acoustic waves. The device comprises a cavity (3) for a fluid formed at an interface between a piezoelectric substrate (1) and channel-forming substrate (2). An acoustic generator (4), such as one or more inter digital transducers, is arranged to excite surface acoustic waves which are converted to interface acoustic waves when entering the interface such that acoustic energy is efficiently transferred into the cavity (3) to create standing acoustic waves (6), whereby acoustic primary radiation forces associated with the standing acoustic waves (6) enable to focus or direct the particles (7) suspended in the fluid.