Title :
Dielectrophoretic manipulation of rolled-up microtubes by surface acoustic waves
Author :
Schmidt, Hagen ; Kong, Xianghua ; Deneke, Christoph ; Schmidt, Oliver G.
Author_Institution :
Inst. for Solid State Res., IFW Dresden, Dresden, Germany
Abstract :
We present the dielectrophoretic manipulation of rolled-up metallic microtubes by surface acoustic waves (SAW) in a microfluidic capillary setup. The electric fields induced by a couple of counter-propagating SAWs forming a standing wave field allow to align conductive microtubes in solution along the acoustic propagation direction. In this work, we achieve controlled rotation of Cr microtubes in one-dimensional microfluidic channels by switching SAW propagation directions in 4-port devices. This technique combines the advantages of fast dielectrophoretic response and hydrodynamic control of tube movement.
Keywords :
acoustic wave propagation; electrophoresis; microchannel flow; pipe flow; surface acoustic wave devices; acoustic propagation; conductive microtubes; dielectrophoretic manipulation; electric fields; fast dielectrophoretic response; hydrodynamic control; microfluidic capillary setup; microfluidic channels; rolled-up metallic microtubes; rolled-up microtubes; surface acoustic waves; tube movement; Dielectrophoresis; Electron tubes; Microfluidics; Substrates; Surface acoustic wave devices; Surface acoustic waves; SAW; rolled-up microtubes; surface acoustic waves;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2011 IEEE International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-61284-775-7
DOI :
10.1109/NEMS.2011.6017573
