Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Repeatability Study of a Pneumatic Dispensing System for Bio-Applications

바이오 응용을 위한 공압 디스펜싱 시스템의 반복 정밀도 연구

  • 이상민 (포항공과대학교 기계공학과) ;
  • 최인호 (포항공과대학교 기계공학과) ;
  • 김준원 (포항공과대학교 기계공학과)
  • Received : 2011.10.24
  • Accepted : 2012.01.02
  • Published : 2012.01.24
Download PDF
⟨ Previous Next ⟩

Abstract

Biological and chemical assays(e.g., clinical tests for medical diagnosis) are needed to handle small liquid volume with high accuracy and high reliability. Many micro-dispensing systems using various actuation methods have been developed and applied. In this research, we confirm repeatability of the cartridge-type dispensing system with various measuring methods for guarantee of an acceptable reliability. We systematically examine the dispensed volume variation and dispense rate during 500,000 shots of sequential actuation. Using the same method, we confirm the repeatability of dispensed volume while varying operating conditions and design parameter(i.e., outlet size) of the dispensing system. Also, we examine the consistency of the dispensed volume of droplet while varying the operating pressures. Furthermore, we repeatedly measure differences between an actual dispensed volume and a target volume. According to our results, it is expected that the stable and reliable performance of our dispensing system can effectively be used in various applications containing bio-solutions.

Keywords

References

  1. P. Cooley, D. Wallace, and B. Antohe, "Applications of ink-jet printing technology to bioMEMS and microfluidic systems", J. of Lab. Automation, vol. 7, no. 5, pp. 33-39, 2002. https://doi.org/10.1016/S1535-5535(04)00214-X
  2. D. Huang and E. S. Kim, "Micromachined acousticwave liquid ejector", J. of MEMS, vol. 10, no. 3, pp. 442-449, 2001. https://doi.org/10.1109/84.946804
  3. S. Hirata, Y. Ishii, H. Matoba, and T. Inui, "An inkjet head using diaphragm microactuator", Proc. IEEE Micro Electro Mechanical System Workshop, pp. 418-423, San Diego, USA, 1996.
  4. J. Park, M. Hardy, S. J. Kang, K. Barton, K. Adair, D. K. Mukhopadhyay, C. Y. Lee, M. S. Strano, A. G. Alleyne, J. G. Georgiadis, P. M. Ferreira, and J. A. Rogers, "High-resolution electrohydrodynamic jet printing", Nature materials, vol. 6, pp. 782-789, 2007. https://doi.org/10.1038/nmat1974
  5. M. Mantysalo, V. Pekkanen, K. Kaija, J. Niittynen, S. Koskinen, E. Halonen, P. Mansikkamaki, and O. Hameenoja, "Capability of inkjet technology in electronics manufacturing", Electronic Components and Technology Conference, pp. 1330-1336, San Diego, USA, 2009.
  6. Byeung Leul Lee and Sang-il Kim, "Piezo-driven inkjet printhead monitoring system", J. Kor. Sensors. Soc., vol. 19, no. 2, pp. 124-129, 2010. https://doi.org/10.5369/JSST.2010.19.2.124
  7. J. Wolcke and D. Ullmann, "Miniaturized HTS technologies-uHTS", Drug Discovery Today, vol. 6, no. 12, pp. 637-646, 2001. https://doi.org/10.1016/S1359-6446(01)01807-4
  8. S. Lee and J. Kim, "Development and characterization of a cartridge-type pneumatic dispenser with an integrated backflow stopper", J. Micromech. Microeng, vol. 20, no. 1, 015011(8pp), 2010. https://doi.org/10.1088/0960-1317/20/1/015011