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A multi-stable paraffin microactuator with positioning capabilities
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
(English)In: Journal of microelectromechanical systems, ISSN 1057-7157Article in journal (Refereed) Submitted
URN: urn:nbn:se:uu:diva-96075OAI: oai:DiVA.org:uu-96075DiVA: diva2:170534
Available from: 2007-09-03 Created: 2007-09-03 Last updated: 2010-03-15Bibliographically approved
In thesis
1. Paraffin Actuators in Microfluidic Systems
Open this publication in new window or tab >>Paraffin Actuators in Microfluidic Systems
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

There is a need for reliable valves and pumps in microfluidics. A good microactuator is the key for low cost and high performance of these components.

Paraffin wax is a promising material to be used as actuator material as is can produce large forces and large strokes. Further, the material is inexpensive and, none the less, the thermal heating of the material can be made with low voltages. All these properties are of interest in flow control components in microfluidics, and especially for disposables and in potable systems.

In this work, paraffin wax has been used in devices and concepts. A valve for high-pressures, a peristaltic pump, a multi-stable actuator, and injector has been shown. A material study was performed on binary mixtures of pure paraffin (n-alkanes), and a concept for loading fluid into a sealed reservoir was shown as well. Several injectors were demonstrated in a Lab-on-a-chip system with other microfluidic components.

High pressure applications in microfluidics along with the multi-stable actuator show good potential. However, the drive and control has to be further developed.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2007. 44 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 325
Engineering physics, Paraffin, Actuators, Valve, Micropump, Teknisk fysik
urn:nbn:se:uu:diva-8165 (URN)978-91-554-6942-9 (ISBN)
Public defence
2007-09-21, Siegbahnsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:15
Available from: 2007-09-03 Created: 2007-09-03Bibliographically approved

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