A magneto-hydrodynamically controlled fluidic network

Loading...
Thumbnail Image
Penn collection
Departmental Papers (MEAM)
Degree type
Discipline
Subject
microfluidic networks
chaotic stirring
magneto hydro dynamics
MHD
micro pump
micro mixer
Funder
Grant number
License
Copyright date
Distributor
Related resources
Author
Zhu, Jianzhong
Qian, Shizhi
Zhiang, Yu
Contributor
Abstract

The paper describes fluidic networks consisting of individually controlled branches. The networks' basic building blocks are conduits equipped with two electrodes positioned on opposing walls. The entire device is either subjected to an external uniform magnetic field or fabricated within a magnetic material. When a prescribed potential difference is applied across each electrode pair, it induces current in the liquid (assumed to be at least a weak electrolyte solution). Analogously with electric circuits, by judicious application of the potential differences at various branches, one can direct liquid flow in any desired way without a need for mechanical pumps or valves. Equipped with additional, internally located electrodes, the network branches double as stirrers capable of generating chaotic advection. The paper describes the basic building blocks for such a network, the operation of these branches as stirrers, a general linear graph-based theory for the analysis and optimal control of fluidic magneto-hydrodynamic networks, an example of a network fabricated with low temperature, co-fired ceramic tapes, and preliminary experimental observations that illustrate that the ideas described in this paper can, indeed, be implemented in practice.

Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
2003-01-15
Journal title
Volume number
Issue number
Publisher
Publisher DOI
Journal Issue
Comments
Postprint version. Published in Sensors and Actuators B: Chemical, Volume 88, Issue 2, January 2003, pages 205-216. Publisher URL: http://dx.doi.org/10.1016/S0925-4005(02)00325-8
Recommended citation
Collection