acoustic streaming – TechConnect Briefs

Ultrasound-driven viscous streaming, modelled via momentum injection

Packer J., Attinger D., Ventikos Y., University of Oxford, UK

Mixing, particle transport, and lysis of biological cells can be performed in microfluidic chips by actuators based on the controlled motion of a gas-liquid interface. There is strong motivation to develop practical and tractable computational [...]

Methods of energizing micro flows by acoustic and electric fields

Schönfeld F., Dadic D., Hardt S., Püschl R., Schmitz F., Institut für Mikrotechnik Mainz –(IMM), DE

We present two different concepts for energizing (e.g. mixing, pumping) of micro flows, which rely on the coupling of acoustic and electromagnetic energy into a liquid. Both concepts are analyzed using computational fluid dynamics (CFD) [...]

A Bio-Inspired Rotor Powered by a Micro-Bubble

Kao J., Warren J., Xu J., Attinger D., Columbia University, US

We present and characterize a novel micro-rotor actuation concept, where acoustic oscillations of a micro-bubble produce a steady fluid flow driving a microfabricated rotor at a rotating speed as high as 600 rpm. Developing micro-machines [...]