Elimination of Clogging in PMMA Microchannels Using Water Assisted CO2 Laser Micromachining

Mohamed Helmy; Ahmed M. Fath El-Bab; Hassan El-Hofy

doi:10.4028/www.scientific.net/AMM.799-800.407

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 799-800Elimination of Clogging in PMMA Microchannels...

Elimination of Clogging in PMMA Microchannels Using Water Assisted CO₂ Laser Micromachining

Abstract:

The accuracy and clogging of microchannels are important for assessing the quality of lab on chip (L-O-C) devices. The clogging affects the fluid mixing efficiency and influences the bonding of substrate. In this paper, inexpensive and quick method for microchannel fabrication in polymethyl methacrylate (PMMA) while reducing the thermal damage is introduced. Accordingly, the substrate was covered with a thin layer of water during CO₂ laser ablation. The effect of water cooling on the clogging formation, heat affected zone and the microchannel geometry in terms of depth and width is investigated. Clogging formation mechanism in the intersection of Y-channel is studied to improve its quality for microfluidics applications. During the experimental work, the CO₂ laser power was varied from 2.4 to 6 W at scanning speed from 5 to 12.5 mm/s. The results showed that covering the PMMA substrate with a thin layer of water prevented clogging formation and reduced the heat affected zone.

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Periodical:

Applied Mechanics and Materials (Volumes 799-800)

Pages:

407-412

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.799-800.407

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Online since:

October 2015

Authors:

Mohamed Helmy*, Ahmed M. Fath El-Bab, Hassan El-Hofy

Keywords:

Clogging, CO₂ Laser Ablation, Heat Affected Zone, PMMA, Thin Water Layer

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References

[1] B. Xiong, K. Ren, Y. Shu, Y. Chen, B. Shen, and H. Wu, Adv. Mater, Vol. 26, (2014), p.5525–5532.

Google Scholar

[2] A. Webster, J. Greenman and S. J. Haswell, J Chem Technol Biotechnol, Vol. 86, (2011), p.10–17.

Google Scholar

[3] Y. Xu, K. Jang, T. Yamashita, Y. Tanaka, K. Mawatari, T. Kitamori, Anal. Bioanal. Chem. Vol. 402 (2012) p.99–107.

Google Scholar

[4] N. C. Nayak, Y. C. Lam, C. Y. Yue and A. T. Sinha , J. Micromech. Microeng. Vol. 18, (2008).

Google Scholar

[5] Yiing C. Yap, Rosanne M. Guijt, Tracey C. Dickson, Anna E. King and Michael C. Breadmore, Analytical Chemistry, Vol. 85, No. 21, (2013), pp.10051-10056.

DOI: 10.1021/ac402631g

Google Scholar

[6] C. K. Chung, T. K. Tan, S. L. Lin, K. Z. Tu, and C. C. Lai, Micro & Nano Letters, Vol. 7, No. 8, (2012), pp.736-739.

Google Scholar

[7] C. K. Chung, Y. C. Lin and G. R. Huang, J. Micromech. Microeng, Vol. 15, (2005), p.1878–1884.

Google Scholar

[8] C.K. Chung · Y.C. Sung · G.R. Huang · E.J. Hsiao ·W.H. Lin and S.L. Lin, Int. J. Mach. Tool Manuf. Vol. 94, (2009), p.927–932.

Google Scholar

[9] Y. Yan, L. Li, K. Sezer, W. Wang, D. Whitehead, L. Ji, Y. Bao and Y. Jiang, J. Eur. Ceram. Soc. Vol. 31, (2011), p.2793–2807.

Google Scholar

[10] Dajun Yuan and Suman Das, J. Appl. Phys. Vol. 101, (2007), p.024901.

Google Scholar

[11] Detlef Snakenborg, Henning Klank and J¨org P Kutter, J. Micromech. Microeng. Vol. 14, (2004), p.182–189.

Google Scholar