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http://dx.doi.org/10.14775/ksmpe.2021.20.12.123

Study of the Geometry and Wettability of Nozzles for Precise Ejection of High Viscous Liquids  

Lee, Sanghyun (Test & System Package, Samsung Electronics)
Bae, Jae Hyeon (Division of Mechanical, Automotive, Robot Component Engineering, Dong-Eui University)
Lee, Sangmin (Division of Mechanical, Automotive, Robot Component Engineering, Dong-Eui University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.12, 2021 , pp. 123-128 More about this Journal
Abstract
Liquid dispensing systems are extensively used in various industries such as display, semiconductor, and battery manufacturing. Of the many types of dispensers, drop-on-demand piezoelectric jetting systems are widely used in semiconductor industries because of their ability to dispense minute volumes with high precision. However, due to the problems of nozzle clogging and undesirable dispensing behavior in these dispensers, which often result in device failure, the use of highly viscous fluids is limited. Accordingly, we studied the behaviors of droplet formation based on changes in viscosity. The effects of surface energy and the inner diameters of needle-type nozzles were also studied. Results showed that nozzles with lower surface energies reduced the ejection volume of droplets when a smaller nozzle diameter (0.21 mm in this study) was applied. These results indicate that the hydrophobic treatment of nozzle surfaces and the use of smaller nozzle diameters are critical factors enabling the use of highly viscous fluids in precision dispensing applications.
Keywords
Droplet; High Viscosity; Dispenser; Wettability; Nozzle;
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  • Reference
1 Jianping, L., and Guiling, D., "Technology development and basic theory study of fluid dispensing - a review," Proceedings of the Sixth IEEE CPMT Conference on High Density Microsystem Design and Packaging and Component Failure Analysis (HDP '04), pp. 198-205, 2004.
2 Kim, D. K. and Kim, S. K., "A Study on Design of Nozzle Tip for Airless Spray Coating," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 11, No. 6, pp. 183-188, 2012.
3 Choi, I. H., Kim, H, Lee, S., Baek, S. and Kim, J., "Plug-in nanoliter pneumatic liquid dispenser with nozzle design flexibility," Biomicrofluidics, Vol 9, No. 6, pp. 064102, 2015.   DOI
4 Trimzi, M. A., Ham, Y. B., An, B. C., Choi, Y. M., Park, J. H. and Yun, S. N., "Development of a Piezo-Driven Liquid Jet Dispenser with Hinge-Lever Amplification Mechanism," Micromachines, Vol 11, No. 2, pp. 117-134, 2020.   DOI
5 Hong, S., Sanchez, C., Du, H. and Kim, N., "Fabrication of 3D Printed Metal Structures by Use of High- Viscosity Cu Paste and a Screw Extruder," Journal of Electronic Materials, Vol 44, No. 3, pp. 836-841, 2015.   DOI
6 Dang, H. W., Yang, S. W., Doh, Y. H. and Choi, K. H., "Improvement of Spray Coating Uniformity using ESD Electrodes," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 15 No. 2, pp. 118-124, 2016.
7 Jang, D., Kim, D. and Moon, J., "Influence on Fluid Physical Properties on Ink-Jet Printability," Langmuir, Vol. 25, pp. 2629-2635, 2009.   DOI
8 Kong, G., Mirsandi, H., Peters, E. A. J. F., Baltussen, M. W., Kuipers, J. A. and Buist K. A., "Oscillation dynamics of a bubble rising in viscous liquid," Experiements in Fluids, Vol. 60, No. 130, 2019.
9 Dong, Z., Ma, J. and Jiang, L., "Manipulating and Dispensing Micro/Nanoliter Droplets by Superhydrophobic Needle Nozzle," ACS Nano, Vol 7, No. 11, pp. 10371-10379, 2013.   DOI
10 Kim, J. H., Kwon, Y. J., Yang, H. S. and Kim, J., "Hydrophobic Surface Treatment with Anisotropic Characteristics Using Laser Selective Deposition," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 19, No. 11, pp. 109-116, 2020.   DOI
11 Lee, S. and Kim, J., "Development and characterization of a cartridge-type pneumatic dispenser with an integrated backflow stopper," Journal of Micromechanics and Microengineering, Vol. 20, No. 1, 015011, 2009.   DOI
12 Stallard, C. P., McDonnell, K. A, Onayemi, O. D., O'Gara, J. P. and Dowling, D. P., "Evaluation of Protein Adsorption on Atmospheric Plasma Deposited Coatings Exhibiting Superhydrophilicto Superhydrophobic Properties," Biointerphases, Vol. 7, No. 31, 2012.
13 Lee, T. M., Kang, T. G., Yang, J. S, Jo, J. D., Kim, K. Y., Choi. B. O. and Kim, D. S., "Theoretical Analysis and Experimental Characterization of DoD Metal-Jet System," Transactions of the Korean Society of Mechanical Engineers A, Vol. 31, No. 256, pp. 11-17, 2007.   DOI