Experimental Investigations on the Effects of Channel Aspect Ratio and Surface Wettability to Control the Surface-Driven Capillary Flow of Water in Straight PMMA Microchannels

Forfattere

  • Subhadeep Mukhopadhyay Department of Electronics and Communication Engineering, Institute of Engineering and Management, Kolkata-700091,India

Nøgleord:

Lithography, Surface tension, Wetting, Carbon, Water, PMMA, Microchannel, Channel aspect ratio

Resumé

Abstract Total 214 individual straight polymethylmethacrylate (PMMA) microchannels have been fabricated by the maskless lithography, hot embossing lithography, direct bonding technique, and atmospheric pressure air dielectric barrier discharge (DBD) plasma processing. The experimental investigations on the effects of structural properties (channel aspect ratios) and physical properties (surface wettability, capillary pressure and kinetic energy) on the surface-driven capillary flow of dyed water in straight PMMA microchannels is a novel approach in this research paper. Below a certain channel aspect ratio, the effect of kinetic energy is more dominant than the effect of channel aspect ratio. The surface-driven capillary flow of dyed water is faster on the surface of higher wettability corresponding to lower static water contact angle. The determined diffusion coefficient is higher in the faster surface-driven capillary flow of dyed water according to the comparison between experimental results and analytical solutions. These experimental investigations are highly useful in bioengineering applications to control the working liquid inside the microfluidic lab-on-a-chip systems for the tuned operation time.   Keywords: Lithography, surface tension, wetting, carbon, water, PMMA, microchannel, channel aspect ratio Cite this Article Subhadeep Mukhopadhyay. Experimental Investigations on the Effects of Channel Aspect Ratio and Surface Wettability to Control the Surface-Driven Capillary Flow of Water in Straight PMMA Microchannels. Trends in Opto-Electro & Optical Communications. 2016; 6(3): 1–12p.

Downloads

Publiceret

2017-02-06

Nummer

Årg. 6 Nr. 3 (2016)

Sektion

Research Articles

Licens

Declaration and Copyright Transfer Form

(to be completed by authors)

 

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

·         I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.

·         I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).

·         I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.

·          I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. _______________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.