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Experimental Studies Of Surface-Driven Capillary Flow In Pmma Microfluidic Devices Prepared By Direct Bonding Technique And Passive Separation Of Microparticles In Microfluidic Laboratory-On-A-Chip Systems

Author

Listed:
  • SUBHADEEP MUKHOPADHYAY

    (Department of Electronics and Communication Engineering, Institute of Engineering and Management, Sector-5, Salt lake Electronics Complex, Kolkata 700091, West Bengal, India)

  • J. P. BANERJEE

    (Institute of Radio Physics and Electronics, University of Calcutta, Kolkata 700009, West Bengal, India)

  • ASHISH MATHUR

    (Amity Institute of Nanotechnology, Amity University, Sector-125, Noida 201303, Uttar Pradesh, India)

  • M. TWEEDIE

    (Nanotechnology and Integrated Bioengineering Centre, Jordanstown Campus, University of Ulster, Newtownabbey, BT37 OQB, Northern Ireland, United Kingdom)

  • J. A. MCLAUGHLIN

    (Nanotechnology and Integrated Bioengineering Centre, Jordanstown Campus, University of Ulster, Newtownabbey, BT37 OQB, Northern Ireland, United Kingdom)

  • SUSANTA SINHA ROY

    (Department of Physics, School of Natural Sciences, Shiv Nadar University, Gautam Budh Nagar 201314, Uttar Pradesh, India)

Abstract

Proper bonding technique is investigated to achieve leakage-free surface-driven capillary flow in polymethylmethacrylate (PMMA) microfluidic devices. SU-8-based silicon stamp is fabricated by maskless lithography. This stamp is used to produce PMMA microchannel structure by hot embossing lithography. A direct bonding technique is mainly employed for leakage-free sealing inside PMMA microfluidic devices. The effect of surface wettability on surface-driven capillary flow is also investigated in PMMA microfluidic devices. The separation of polystyrene microparticles in PMMA laboratory-on-a-chip systems is investigated with the reduction of separation time by air dielectric barrier discharge (DBD) plasma processing of channel surfaces. This study is useful to fabricate the microfluidic laboratory-on-a-chip systems and to understand the surface-driven capillary flow.

Suggested Citation

  • Subhadeep Mukhopadhyay & J. P. Banerjee & Ashish Mathur & M. Tweedie & J. A. Mclaughlin & Susanta Sinha Roy, 2015. "Experimental Studies Of Surface-Driven Capillary Flow In Pmma Microfluidic Devices Prepared By Direct Bonding Technique And Passive Separation Of Microparticles In Microfluidic Laboratory-On-A-Chip Sy," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 22(04), pages 1-11.
    • Handle: RePEc:wsi:srlxxx:v:22:y:2015:i:04:n:s0218625x1550050x
    DOI: 10.1142/S0218625X1550050X
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