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Low-voltage lab-on-chip for micro and nanoparticles manipulation and detection: experimental results

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Abstract

In this paper, a low voltage fully integrated Laboratory-on-Chip (LoC) for dielectrophoretic manipulation and capacitive sensing of nano and micro particles is presented. The proposed system is intended to design an implantable LoC. The lowest static power consumption of the implemented Integrated circuit is 650 μA with a voltage supply of −1.10 and +1.8 V. Three different sizes of carboxyl-modified polystyrene particles (diameters of 0.22, 0.97 and 2.04 μm) where tested experimentally with three different electrode architectures to achieve dielectrophoretic mixing and separation. U-shaped, L-shaped and octagonal electrodes are used to perform the separation and mixing operations. The biosensing part is designed with a charge based capacitive sensor with an integrated sigma-delta modulator at its output stage. It was tested experimentally with algae and ethanol. The chip size is 1.2 by 1.2 mm and it is connected to a 15 × 30 cm microfluidic design. An efficient particle manipulation was achieved by applying a voltage of 1.7 V peak to peak in the microchannel with 90 and 180° dephased signals.

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Acknowledgments

The authors acknowledge the financial support from NSERC and Canada Research Chair in Smart Medical Devices, and are grateful for the design and simulation tools supplied by CMC Microsystems. The authors also thank Laurent Mouden and Abbas Nemr for their help in this project.

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  1. Ecole Polytechnique de Montreal, Montreal, QC, Canada

    Mohamed Amine Miled, Genevieve Massicotte & Mohamad Sawan

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  1. Mohamed Amine Miled
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  2. Genevieve Massicotte
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  3. Mohamad Sawan
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Correspondence to Mohamed Amine Miled.

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Miled, M.A., Massicotte, G. & Sawan, M. Low-voltage lab-on-chip for micro and nanoparticles manipulation and detection: experimental results. Analog Integr Circ Sig Process 73, 707–717 (2012). https://doi.org/10.1007/s10470-012-9891-y

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  • DOI: https://doi.org/10.1007/s10470-012-9891-y

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