Design of a relaying electroosmosis pump driven by low-voltage DC |
| |
Authors: | Qiuquan Guo Yu Liu Xueyin Wu Jun Yang |
| |
Affiliation: | (1) Biomedical Engineering Program, Faculty of Engineering, The University of Western Ontario, London, ON, N6A 5B9, Canada;(2) Department of Mechanical and Materials Engineering, Faculty of Engineering, The University of Western Ontario, London, ON, N6A 5B9, Canada |
| |
Abstract: | Electroosmosis pumps (EOPs) have been widely used for manipulating small amounts of reagents for chemical and biological analysis.
Traditionally, a high-voltage DC has to be applied in order to achieve the required flow rate. One alternative is to use low
AC voltage. Here we propose another solution, which, instead of using a high-voltage DC or low AC voltage, adds a low-voltage
DC to an array of electrodes. This design of EOP is called a relaying EOP or cascade EOP. In this study, we intend to push
the limit of the low-voltage further down to 2 V by patterning a dense electrode array in a straight microchannel. Two patterns
of interdigitated electrodes, symmetric with equal size electrodes and asymmetric with unequal size electrodes, are proposed.
Simulations are performed to optimize the distribution and geometrical parameters of the electrode array in order to achieve
the maximum flow rate. The proposed low-voltage DC electroosmosis pump shows an advantage in integrating EOP into portable
Lab-on-a-chip devices. In addition, the low-voltage DC EOP shows a good promise for in vivo biomedical applications such as
drug delivery. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|