Enhancing sensitivity in absorption spectroscopy using a scattering cavity

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Absorption spectroscopy is widely used to detect samples with spectral specificity. Here, we propose and demonstrate a method for enhancing the sensitivity of absorption spectroscopy. Exploiting multiple light scattering generated by a boron nitride (h-BN) scattering cavity, the optical path lengths of light inside a diffusive reflective cavity are significantly increased, resulting in more than ten times enhancement of sensitivity in absorption spectroscopy. We demonstrate highly sensitive spectral measurements of low concentrations of malachite green and crystal violet aqueous solutions. Because this method only requires the addition of a scattering cavity to existing absorption spectroscopy, it is expected to enable immediate and widespread applications in various fields, from analytical chemistry to environmental sciences.
Publisher
NATURE PORTFOLIO
Issue Date
2021-07
Language
English
Article Type
Article
Citation

SCIENTIFIC REPORTS, v.11, no.1

ISSN
2045-2322
DOI
10.1038/s41598-021-94028-4
URI
http://hdl.handle.net/10203/287674
Appears in Collection
PH-Journal Papers(저널논문)
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