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Principal components of the DEP assay system. (A) Nonclosed ring gold electrodes, with width of 20 μm and inner diameter of 200 μm. (B) The assembled chip with a reservoir modified from a 200-μL Eppendorf tube. (C) Signal generator. C1: HP33120A, C2: SMB100A. (D) CCD camera coupled to a fluorescence microscope.
Abbreviation: DEP, dielectrophoresis.
