13 May 2015 Bioenabled SERS substrates for food safety and drinking water monitoring
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Abstract
We present low-cost bioenabled surface-enhanced Raman scattering (SERS) substrates that can be massively produced in sustainable and eco-friendly methods with significant commercial potentials for the detection of food contamination and drinking water pollution. The sensors are based on diatom frustules with integrated plasmonic nanoparticles. The ultra-high sensitivity of the SERS substrates comes from the coupling between the diatom frustules and Ag nanoparticles to achieve dramatically increased local optical field to enhance the light-matter interactions for SERS sensing. We successfully applied the bioenabled SERS substrates to detect melamine in milk and aromatic compounds in water with sensitivity down to 1μg/L.
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Jing Yang, Jing Yang, Gregory L. Rorrer, Gregory L. Rorrer, Alan X. Wang, Alan X. Wang, "Bioenabled SERS substrates for food safety and drinking water monitoring", Proc. SPIE 9488, Sensing for Agriculture and Food Quality and Safety VII, 948808 (13 May 2015); doi: 10.1117/12.2178077; https://doi.org/10.1117/12.2178077
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