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A Microfluidic Chip with Integrated Colloidal Crystal for Online Optical Analysis
Author(s) -
Hoi SiewKit,
Chen Xiao,
Kumar Vanga Sudheer,
Homhuan Sureerat,
Sow ChorngHaur,
Bettiol Andrew A.
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201002632
Subject(s) - materials science , colloidal crystal , microfluidics , chip , microchannel , optoelectronics , wavelength , lab on a chip , nanotechnology , colloid , computer science , telecommunications , chemistry
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.