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Issue 4, 2015
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Two-dimensional photonic crystals for sensitive microscale chemical and biochemical sensing

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Abstract

Photonic crystals – optical devices able to respond to changes in the refractive index of a small volume of space – are an emerging class of label-free chemical- and bio-sensors. This review focuses on one class of photonic crystal, in which light is confined to a patterned planar material layer of sub-wavelength thickness. These devices are small (on the order of tens to hundreds of microns square), suitable for incorporation into lab-on-a-chip systems, and in theory can provide exceptional sensitivity. We introduce the defining characteristics and basic operation of two-dimensional photonic crystal sensors, describe variations of their basic design geometry, and summarize reported detection results from chemical and biological sensing experiments.

Graphical abstract: Two-dimensional photonic crystals for sensitive microscale chemical and biochemical sensing

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Publication details

The article was received on 13 Oct 2014, accepted on 22 Dec 2014 and first published on 22 Dec 2014


Article type: Critical Review
DOI: 10.1039/C4LC01208A
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Lab Chip, 2015,15, 971-990

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    Two-dimensional photonic crystals for sensitive microscale chemical and biochemical sensing

    J. E. Baker, R. Sriram and B. L. Miller, Lab Chip, 2015, 15, 971
    DOI: 10.1039/C4LC01208A

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