Investigation of trapping process in “Centrifuge-on-a-chip”

Authors

Jun Zhang, University of WollongongFollow
Ming Li, University Of WollongongFollow
Weihua Li, University of WollongongFollow
Gursel Alici, University of WollongongFollow

RIS ID

81651

Publication Details

Zhang, J., Li, M., Li, W. & Alici, G. (2013). Investigation of trapping process in “Centrifuge-on-a-chip”. 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) (pp. 1266-1271). United States: IEEE.

Abstract

“Centrifuge-on-a-chip” is a versatile and multifunctional microfluidic chip which can conduct operations of selective trapping, enrichment, labeling and solution exchange. In this work, the mechanism of selective trapping ability was studied by both the experiments and numerical simulation. We proved the existence of shear gradient lift force in the expansion-contraction cavity and derived an explicit expression of it. Also, a numerical modeling was developed to study the trapping process of micro-particles in a “Centrifuge-on-a-chip”. The effects of flow condition and particle size on the trapping process were investigated. It demonstrates that the derived expression and developed model are suitable for the prediction of particles’ trapping process, which can assist the design of “Centrifuge-on-a-chip”.