A superparamagnetic bead driven fluidic device
Husband, B., Melvin, T. and Evans, A.G.R. (2005) A superparamagnetic bead driven fluidic device. In, Microfluidic Devices III. Smart Sensors, Actuators, and MEMS II , SPIE. (doi:10.1117/12.608699).
Injection strategies have been employed in the field of fluidic MEMS using piezo electric or thermal actuators. A very popular application for such technology is inkjet printing. Largely this technology is used to produce droplets of fluid in air; the aim of this investigation is to produce an injection device for the precise dispensing of nanolitre volumes of fluid. A novel technique for dispensing fluid using superparamagnetic beads has been investigated. The beads used (Dynal Biotech) contain a homogeneous dispersion of Fe. This is an investigation using silicon and Pyrex fabricated micro channels with smaller dimensions, such that the dimensions will be similar to those which will be used to produce a pipette device. Here results are presented using these fabricated micro channels, where the effects of using differently sized bead plugs and varying velocities are examined. The results follow our proposed theory; further analysis is required to determine the operation of a bead plug during all states of movement.
|Item Type:||Book Section|
|Digital Object Identifier (DOI):||doi:10.1117/12.608699|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||11 Aug 2008|
|Last Modified:||06 Aug 2015 02:47|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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