Optically driven Archimedes micro-screws for micropump application

Archimedes micro-screws have been fabricated by three-dimensional two-photon polymerization using a Nd:YAG Q-switched microchip laser at 532nm. Due to their small sizes they can be easily manipulated, and made to rotate using low power optical tweezers. Rotation rates up to 40 Hz are obtained with a...

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Bibliographic Details
Published in:Optics express 2011-04, Vol.19 (9), p.8267-8276
Main Authors: Lin, Chih-Lang, Vitrant, Guy, Bouriau, Michel, Casalegno, Roger, Baldeck, Patrice L
Format: Article
Language:English
Subjects:
Equipment Design
Equipment Failure Analysis
Microfluidic Analytical Techniques - instrumentation
Optical Tweezers
Optics
Physics
Systems Integration
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Summary:Archimedes micro-screws have been fabricated by three-dimensional two-photon polymerization using a Nd:YAG Q-switched microchip laser at 532nm. Due to their small sizes they can be easily manipulated, and made to rotate using low power optical tweezers. Rotation rates up to 40 Hz are obtained with a laser power of 200 mW, i.e. 0.2 Hz/mW. A photo-driven micropump action in a microfluidic channel is demonstrated with a non-optimized flow rate of 6 pL/min. The optofluidic properties of such type of Archimedes micro-screws are quantitatively described by the conservation of momentum that occurs when the laser photons are reflected on the helical micro-screw surface.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.008267