Electroactive hydrodynamic weirs for microparticle manipulation and patterning
We present a platform for parallelized manipulations of individual polarizable micron-scale particles (i.e., microparticles) that combines negative dielectrophoretic forcing with the passive capture of hydrodynamic weir-based trapping. Our work enables manipulations using ejection- and/or exclusion-...
Main Authors: | , , |
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Other Authors: | |
Format: | Article |
Language: | en_US |
Published: |
American Institute of Physics
2011
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Online Access: | http://hdl.handle.net/1721.1/60409 https://orcid.org/0000-0001-8898-2296 |
Summary: | We present a platform for parallelized manipulations of individual polarizable micron-scale particles (i.e., microparticles) that combines negative dielectrophoretic forcing with the passive capture of hydrodynamic weir-based trapping. Our work enables manipulations using ejection- and/or exclusion-based methods. In ejection operations, we unload targeted weirs by displacing microparticles from their capture faces via electrode activation. In exclusion-based operations, we prevent weir loading by activating selected on-chip electrodes before introducing microparticles into the system. Our work describes the device’s passive loading dynamics and demonstrates enhanced functionalities by forming a variety of particle patterns. |
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