Electrokinetic patterning of colloidal particles with optical landscapes |
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Authors: | Williams Stuart J Kumar Aloke Wereley Steven T |
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Affiliation: | Purdue University, West Lafayette, Indiana 47907, USA. |
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Abstract: | We demonstrate an opto-electrokinetic technique for non-invasive particle manipulation on the surface of a parallel-plate indium tin oxide (ITO) electrode that is biased with an alternating current (AC) signal and illuminated with near-infrared (1064 nm) optical landscapes. This technique can generate strong microfluidic vortices at higher AC frequencies (>100 kHz) and dynamically and rapidly aggregate and pattern particle groups at low frequencies (<100 kHz). |
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