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Proceedings Paper

Optofluidic chip system with integrated fluidically controllable optics
Author(s): Manfred Schubert; Matthias Arras; Günter Mayer; Thomas Henkel
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Paper Abstract

This paper describes an optofluidic approach for fiber coupling and flexible beam shaping in the central plane of all-glass microfluidic devices. Special microchannels with half circular sidewalls have been integrated into the device in order to create micro lens systems. Focal length of each of these micro-lenses can be controlled by the refractive index of the fluid inside the channel. That way adaptive, microfluidically controllable lens systems can be realized for use in beam shaping and light-section creation. A prototyped chip with five parallel fluidic channels with different distances between them and with free adjustable and combinational fluidic refraction indices inside has been prepared and investigated. A total of six fiber channels on each side are used for light input and output. The developed chip concept has a great potential for application in small biochemical analysis units like lab-on-a-chip or μ-total analysis systems. Simulations of light distribution inside the chip in dependence on fluid refraction indices as well as geometrical parameters are in accordance with realized transmission measurements.

Paper Details

Date Published: 9 July 2009
PDF: 4 pages
Proc. SPIE 7371, Novel Optical Instrumentation for Biomedical Applications IV, 737113 (9 July 2009); doi: 10.1117/12.831751
Show Author Affiliations
Manfred Schubert, Institut für Photonische Technologien e. V. (Germany)
Matthias Arras, Friedrich-Schiller Univ. Jena (Germany)
Günter Mayer, Institut für Photonische Technologien e. V. (Germany)
Thomas Henkel, Institut für Photonische Technologien e. V. (Germany)

Published in SPIE Proceedings Vol. 7371:
Novel Optical Instrumentation for Biomedical Applications IV
Christian D. Depeursinge; I. Alex Vitkin, Editor(s)

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