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A micro optofluidic lens with short focal length

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A micro optofluidic lens with short focal length

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dc.contributor.author Song, Chaolong
dc.contributor.author Nguyen, Nam-Trung
dc.contributor.author Tan, Say-Hwa
dc.contributor.author Asundi, Anand Krishna
dc.date.accessioned 2012-04-12T04:48:15Z
dc.date.available 2012-04-12T04:48:15Z
dc.date.copyright 2009
dc.date.issued 2012-04-12
dc.identifier.citation Song, C. L., Nguyen, N. T., Tan, S. H., & Asundi, A. K. (2009). A micro optofluidic lens with short focal length. Journal of Micromechanics and Microengineering, 19(8).
dc.identifier.uri http://hdl.handle.net/10220/7750
dc.description.abstract A micro optofluidic lens is formed by laminar streams of immiscible liquids with different refractive indices. This paper reports modelling and characterization for a new design of a micro optofluidic lens. The lens has a circular chamber allowing the formation of interfaces with a perfect arc shape. The inlet and the outlet of the lens chamber are placed with an offset to the chamber axis to achieve a radius of curvature smaller than the limiting chamber radius. A model mathematically predicts the relationship between the flow rate ratio and the curvature of the interface and the resulting focal length. The device was fabricated and tested with laser light guided by optical fibres. Experiments were carried out to verify the analytical model. Benzyl alcohol and ethylene glycol were used as optical media to form the lens. Due to the small radius of curvature, better focusing ability than the previous symmetric design was achieved. On-chip focusing with fibre-to-fibre transmission was demonstrated with this micro optofluidic lens.
dc.format.extent 11 p.
dc.language.iso en
dc.relation.ispartofseries Journal of micromechanics and microengineering
dc.rights © 2009 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Micromechanics and Microengineering, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: DOI:[http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/19/8/085012].
dc.subject DRNTU::Engineering::Mechanical engineering
dc.title A micro optofluidic lens with short focal length
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/19/8/085012
dc.description.version Accepted version
dc.identifier.rims 152446

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