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

Journal of Nanoscience, NanoEngineering & Applications

Effects of Channel Volume and Channel Aspect Ratio on the Surface-Driven Capillary Flow of Dyed Water in Sudden Expansion Microchannels Fabricated by Polymer

  1. Subhadeep Mukhopadhyay

Abstract

In this experimental work, total three individual sudden expansion microchannels (microfluidic devices) are fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography and direct bonding technique. Dyed water is prepared and used as the selected working liquid. Channel aspect ratio (channel height/channel width) is defined and used as the structural parameter in this work. Diffusion coefficient is used as the flow parameter. Effect of channel volume on the surface-driven capillary flow of dyed water is investigated in this experimental work. Comparison between real-life colour-images and real-life gray-scale images is performed to prominently demonstrate the surface-driven microfluidic flow. Also, the probable experimentations on thermal fluid-flow in microfluidics are mentioned to perform in future. This experimental work will be useful in bioengineering applications.

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