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http://dx.doi.org/10.14775/ksmpe.2019.18.8.038

Characteristic Analysis of Electrowetting on Dielectric Layer  

Choi, Jin Ho (School of Mechanical Engineering, Kyungpook National University)
Kim, Gyu man (School of Mechanical Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.8, 2019 , pp. 38-43 More about this Journal
Abstract
Electrowetting on dielectric (EWOD) is a unique method of shape control of small-volume droplets in microfluidic biochips that relies on modification of surface wetting characteristics using electrical methods. In this study, the droplet shape control on various dielectric surfaces by the EWOD and the effect of droplets on the contact angle as well as the shape were investigated. The droplet used in the experiment was on a sample substrate with $5{\mu}l$ of de-ionized water (DIW) using a micropipette, and wettability was measured with a contact angle meter. This study is expected to be helpful for the development of various micro-total-analysis-systems (${\mu}TAS$) and microfluidic systems with MEMS technology.
Keywords
Electrowetting; Wettability; Contact Angle; Droplet; Dielectric Layer;
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1 Pollack, M. G., Fair, R. B. and Shenderov, A. D., “Electrowetting-based actuation of liquid droplets for microfluidic applications,” Applied Physics Letters, Vol. 77, No. 11, pp. 1725-1726, 2000.   DOI
2 Lee, J., Moon, H., Fowler, J., Schoellhammer, T. and Kim, C. J., “Electrowetting and electrowetting-on-dielectric for microscale liquid handling,” Sensors and actuators A: physical, Vol. 95, No. 2-3, pp. 259-268, 2002.   DOI
3 Kang, K. H., “How electrostatic fields change contact angle in electrowetting,” Langmuir, Vol. 18, No. 26, pp. 10318-10322, 2002.   DOI
4 Moon, H., Cho, S. S., Garrell, R. L. and Kim, C. J., “Low voltage electrowetting-on-dielectric,” Journal of applied physics, Vol. 92, No. 7, pp. 4080-4087, 2002.   DOI
5 Cho, S. K., Moon, H. and Kim, C. J., “Creating, transporting, cutting, and merging liquid droplets by electrowetting-based actuation for digital microfluidic circuits,” Journal of Microelectromechanical Systems, Vol. 12, No. 1, pp. 70-80, 2003.   DOI
6 Wheeler, A. R., Moon, H., Kim, C. J., Loo, J. A. and Garrell, R. L., “Electrowetting-Based Microfluidics for Analysis of Peptides and Proteins by Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry,” Analytical Chemistry, Vol. 76, No. 16, pp. 4833-4838, 2004.   DOI
7 Jones, T. B., Fowler, J. D., Chang, Y. S. and Kim, C. J., “Frequency-Based Relationship of Electrowetting and Dielectrophoretic Liquid Microactuation,” Langmuir, Vol. 19, No. 18, pp. 7646-7651, 2003.   DOI
8 Hong, J. S., Ko, S. H., Kang, K. H. and Kang, I. S., “A numerical investigation on AC electrowetting of a droplet,” Microfluidics and Nanofluidics, Vol. 8, No. 2, pp. 263-271, 2008.   DOI
9 Lu, H. W., Bottausci, F., Fowler, J. D., Bertozzi, A. L., Meinhart, C. and Kim, C. J., “A study of EWOD-driven droplets by PIV investigation,” Lab on a Chip, Vol. 8, No. 3, pp. 456-461, 2008.   DOI
10 Lee, K. Y., Park, S., Lee, Y. R. and Chung, S. K., "Magnetic droplet microfluidic system incorporated with acousticexcitation for mixing enhancement," Sensors and actuators A: physical, Vol. 243, pp. 59-65, 2016.   DOI
11 Chung, S. K., Rhee, K. and Cho, S. K., “Bubble Actuation by Electrowetting-on-Dielectric (EWOD) and Its Applications: A Review,” International Journal OF Precision Engineering and Manufacturing, Vol. 11, No. 6, pp. 991-1006, 2010.   DOI
12 Lee, S. J., Lee, S. and Kang, K. H., "Droplet jumping by electrowetting and its application to the three-dimensional digital microfluidics," Applied Physics Letters, Vol. 100, No. 8, Paper No. 081604, 2012.
13 Zhao, Y. P. and Wang Y., "Fundamentals and Applications of Electrowetting: A Critical Review," Reviews of Adhesion and Adhesives, Vol. 1, No. 1, pp.114-174, 2013.   DOI
14 Krupenkin, T., Yang, S. and Mach, P., “Tunable liquid microlens,” Applied Physics Letters, Vol. 82, No. 3, pp. 316-318, 2003.   DOI
15 Kuiper, S. and Hendriks, B. H. W., “Variable-focus liquid lens for miniature cameras,” Applied Physics Letters, Vol. 85, No. 7, pp. 1128-1130, 2004.   DOI
16 Barbulovic-Nad, I., Yang, H., Park, P. S., Wheeler, A. R., “Digital microfluidics for cell-based assays,” Lab on a Chip, Vol. 8, No. 4, pp. 519-526, 2008.   DOI
17 Fair, R. B., “Digital microfluidics: is a true lab-on-a-chip possible?,” Microfluidics and Nanofluidics, Vol. 3, No. 3, pp. 245-281, 2007.   DOI
18 Haeberle, S. and Zengerle, R., “Microfluidic platforms for lab-on-a-chip applications,” Lab on a Chip, Vol. 7, No. 9, pp. 1094-1110, 2007.   DOI
19 Peng, C., Zhang, Z., Kim, C. J and Ju, Y. S., "EWOD (electrowetting on dielectric) digital microfluidics powered by finger actuation," Lab on a Chip, Vol. 14, No. 6, pp. 1117-1122, 2014.   DOI
20 Baek, S., Won, D. J., Kim, H. and Kim, J., “Movement of Liquid Metal Droplet in Channel by Continuous Electrowetting Effect,” J. Korean Soc. Precis. Eng., Vol. 33, No. 3, pp. 217-223, 2016.   DOI