TECHNOLOGY FOR THE DEVELOPMENT OF MAGNETIC MICRO STIR-BAR MIXERS FOR FLUID LAB-ON-A-CUIP APPLICATIONS

摘要

A microraachined magnetic-bar micromixer for microscale fluid mixing in biological laboratory-on-a-chip applications has been developed. The mixer design is inspired by large scale magnetic bar mixers. A single magnetic bar or an array of them can rotate rapidly within a fluid environment under the influence of a rotating external magnetic field. Results of fluid mixing in micro channels and chambers are investigated using experimental means and computer-aided fluid simulation. The stiner can be fabricated using an efficient surface micromachining process.