STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Thin Films, Coating Science Technology & Application

Experimental Demonstration on Microfluidic Capillary Flow of Red Dye in Photoresist based Glass Microfluidic Devices

  1. Subhadeep Mukhopadhyay

Abstract

In this experimental work, a set of three individual SU-8 based glass microfluidic devices are fabricated by maskless lithography and indirect bonding technique in leakage-free conditions. Commercially available red coloured food dye is used as the selected working liquid. The microfluidic leakage in other set of two leaky microfluidic devices is experimentally demonstrated. Microfluidic devices should be fabricated at leakage-free conditions to achieve exact fluid flow characteristics. The effect of surface-to-volume ratio on surface-driven capillary flow of red dye is studied. Also, the effect of microfluidic friction on surface-driven capillary flow of red dye is studied. The diffusion coefficient is calculated corresponding to each surface-driven capillary flow of red dye. This experimental work will be useful to fabricate the microfluidic laboratory-on-a-chip systems by SU-8 photoresist.

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