Study on a Bolt-clamped Type Transducer for Emulsion Generation in Microchannel Device

Abstract

In this study, a bolt-clamped type piezoelectric transducer for microchannel device to generate emulsion which contains sub-micron level droplets has been designed, fabricated and evaluated. In the proposed device, disk type piezoelectric elements are clamped by a bolt located in outer space. The transducer structure has been designed by using FEM simulation to generate the ultrasonic vibration with a suitable pressure distribution to the microchannel device. We have fabricated the transducer and evaluated the pressure distribution. Additionally, nano emulsion has been successfully generated by using the proposed transducer and the microchannel device.