Issue 19, 2012
From the journal:

Lab on a Chip

Combinatorial wetting in colour: an optofluidic nose†‡

Kevin P. Raymond,§ab   Ian B. Burgess,§*bc   Mackenzie H. Kinney,§ab   Marko Lončarc  and  Joanna Aizenbergbcd  

* Corresponding authors

a University of Waterloo, Waterloo, ON, Canada

b Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA
E-mail: ibburges@fas.harvard.edu

c School of Engineering and Applied Sciences, Harvard University, Cambridge, MA

d Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA

Abstract

We present a colourimetric litmus test for simple differentiation of organic liquids based on wetting, which achieves chemical specificity without a significant sacrifice in portability or ease-of-use. Chemical specificity is derived from the combination of colourimetric wetting patterns produced by liquids in an array of inverse opal films, each having a graded wettability, but using different surface groups to define that gradient.

Graphical abstract: Combinatorial wetting in colour: an optofluidic nose

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Article information

DOI
https://doi.org/10.1039/C2LC40489C
Article type
Communication
Submitted
01 May 2012
Accepted
28 May 2012
First published
30 May 2012

Lab Chip, 2012,12, 3666-3669

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Combinatorial wetting in colour: an optofluidic nose

K. P. Raymond, I. B. Burgess, M. H. Kinney, M. Lončar and J. Aizenberg, Lab Chip, 2012, 12, 3666 DOI: 10.1039/C2LC40489C

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