This manuscript presents a portable and low cost electronic system for specific point-of-use dielectrophoresis
applications. The system is composed of two main modules: a) a multiphase generator based on a Class E amplifier,
which provides 4 sinusoidal signals (0°, 90°, 180°, 270°) at 1 MHz with variable output voltage up to 10 Vpp (Vm) and an
output driving current of 1 A; and b) a dielectrophoresis-based microfluidic chip containing two interdigitated electrodes.
The system has been validated by concentrating Escherichia coli (E. coli) at 1 MHz while applying a continuous flow of 5 µL/min. The device functionalities were verified under different conditions, achieving an 83% trapping efficiency when
counter-phased signals are used.
Keywords: Cell Concentrator, Class E amplifier, Dielectrophoresis, electronics, lab-on-a-chip (LOC), low cost, portable device.
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