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http://dx.doi.org/10.5369/JSST.2012.21.1.53

Repeatability Study of a Pneumatic Dispensing System for Bio-Applications  

Lee, Sang-Min (Department of Mechanical Engineering, POSTECH)
Choi, In-Ho (Department of Mechanical Engineering, POSTECH)
Kim, Joon-Won (Department of Mechanical Engineering, POSTECH)
Publication Information
Journal of Sensor Science and Technology / v.21, no.1, 2012 , pp. 53-58 More about this Journal
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
Dispensing System; Pneumatic Actuation; Repeatability; Reagent;
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Times Cited By KSCI : 1  (Citation Analysis)
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