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Full Paper
A Microfluidic Chip with Integrated Colloidal Crystal for Online Optical Analysis
Article first published online: 4 MAY 2011
DOI: 10.1002/adfm.201002632
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Hoi, S.-K., Chen, X., Kumar, V. S., Homhuan, S., Sow, C.-H. and Bettiol, A. A. (2011), A Microfluidic Chip with Integrated Colloidal Crystal for Online Optical Analysis. Adv. Funct. Mater., 21: 2847–2853. doi: 10.1002/adfm.201002632
Publication History
- Issue published online: 4 AUG 2011
- Article first published online: 4 MAY 2011
- Manuscript Revised: 17 MAR 2011
- Manuscript Received: 15 DEC 2010
- Abstract
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Keywords:
- colloidal crystals;
- lab-on-a-chip devices;
- microfluidics;
- integrated filter
Abstract
A microfluidic chip that incorporates colloidal crystals inside a microchannel system for on-chip integration of optical components is presented. It is demonstrated that the use of fluorescent spheres offers added advantages and functionality to the colloidal crystal array. Multifunctional optical components are demonstrated that are able to serve as a reference wavelength calibration line in measured reflectance spectra. Integrating colloidal crystals with varying filtering effects into a microfluidic chip enables selective transmission or blocking of a particular range of wavelengths locally. In addition, combinations of double-band colloidal crystal filters provide further tunability of the working wavelength for on-chip detection applications.