Effect of phase shift on optimal operation of serial-connected valveless micropumps
SCIE
SCOPUS
- Title
- Effect of phase shift on optimal operation of serial-connected valveless micropumps
- Authors
- Kim, BH; Kim, IC; Kang, YJ; Ryu, J; Lee, SJ
- Date Issued
- 2014-03-01
- Publisher
- ELSEVIER SCIENCE S
- Abstract
- The effect of phase shift between serial-connected two pump chambers on the pumping performance of valveless micropumps has been investigated. Inspired by the two-pump organs of mosquitoes, two different valveless micropumps consisting of serial-connected two-pump chambers and three diffuser elements were fabricated using the conventional MEMS fabrication process. The two-pump chambers of the type 1 pump (TP I) have the same size, whereas those of the type 2 pump (TP II) have a different area. The volume flow rate was measured by varying the operating frequency and the phase shift by using a specially designed control system. The pumping performance of the serial-connected two micropumps is heavily dependent on the phase shift. The optimum phase shifts of both micropumps are 180 degrees out-of-phase at high operating frequencies. When the operating frequency was decreased below 500 Hz, they became closer to in-phase (theta=0 degrees) condition. The phase shift has a significant influence on the pumping performance which is increased 186% at the pumping frequency of 1.1 kHz. The results of this study are helpful in understanding the optimum operation of a serial-connected double-chamber micropump. (C) 2014 Elsevier B.V. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14215
- DOI
- 10.1016/J.SNA.2014.01.016
- ISSN
- 0924-4247
- Article Type
- Article
- Citation
- SENSORS AND ACTUATORS A-PHYSICAL, vol. 209, page. 133 - 139, 2014-03-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.