Combinatorial wetting in colour: an optofluidic nose.
basic_science · Level V
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- Record sourced from PubMed, PMID 22773181.
- Also identified by DOI 10.1039/c2lc40489c.
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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.
Medical subject headings
- Colorimetry
- Microfluidic Analytical Techniques
- Optics and Photonics