The influence of the pump chamber geometry on the characteristics of the micropump operated by surface tension

Author

Jun, Do Han ; Yang, Sang Sik

Author_Institution

Sch. of Electron. Eng., Ajou Univ., Suwon

fYear

2008

fDate

6-9 Jan. 2008

Firstpage

700

Lastpage

703

Abstract

This paper presents the influence of the geometry on the performance of the micropump operated by thermopneumatic pressure and surface tension. The micropump is made of PDMS without any moving part. This micropump injects a desired amount of liquid by means of the bubble expanded by electric heating, fills the chamber using negative pressure and controls liquid using surface tension. For various shapes of the pump chamber we compare the micropump characteristics such as the discharge volume, the discharge time, the backward flow loss, etc. we draw an efficient geometry from the test results. The efficient micropump discharges 126.2 nL for 5 seconds and its discharge volume deviation is 2.2 nL.

Keywords

micropumps; surface tension; micropump; pump chamber geometry; surface tension; thermopneumatic pressure; Control systems; Drug delivery; Energy loss; Geometry; Microchannel; Micropumps; Resistance heating; Shape; Surface tension; Systems engineering and theory; Micropump; geometry; surface tension; thermopneumatic;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2008. NEMS 2008. 3rd IEEE International Conference on

Conference_Location

Sanya

Print_ISBN

978-1-4244-1907-4

Electronic_ISBN

978-1-4244-1908-1

Type

conf

DOI

10.1109/NEMS.2008.4484425

Filename

4484425