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Issue 10, 2007
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Microfluidic flow rate detection based on integrated optical fiber cantilever

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Abstract

We demonstrate an integrated microfluidic flow sensor with ultra-wide dynamic range, suitable for high throughput applications such as flow cytometry and particle sorting/counting. A fiber-tip cantilever transduces flow rates to optical signal readout, and we demonstrate a dynamic range from 0 to 1500 µL min−1 for operation in water. Fiber-optic sensor alignment is guided by preformed microfluidic channels, and the dynamic range can be adjusted in a one-step chemical etch. An overall non-linear response is attributed to the far-field angular distribution of single-mode fiber output.

Graphical abstract: Microfluidic flow rate detection based on integrated optical fiber cantilever

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Publication details

The article was received on 09 May 2007, accepted on 25 Jun 2007 and first published on 11 Jul 2007


Article type: Paper
DOI: 10.1039/B706944H
Citation: Lab Chip, 2007,7, 1352-1356
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    Microfluidic flow rate detection based on integrated optical fiber cantilever

    V. Lien and F. Vollmer, Lab Chip, 2007, 7, 1352
    DOI: 10.1039/B706944H

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