Hybrid plasmonic/photonic crystals for optical detection of bacterial contaminants

Here, we show that a hybrid plasmonic/photonic crystal consisting of a thin layer of bioactive plasmonic material (i.e. silver) deposited on top a 1D PhC can detect one of the most common bacterial contaminant, namely Escherichia coli. We speculate that the change in the plasmon charge density broug...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 238; p. 7002
Main Authors Paternò, Giuseppe M., Moscardi, Liliana, Donini, Stefano, Ross, Aaron M., Pietralunga, Silvia M., Dalla Vedova, Nicholas, Normani, Simone, Kriegel, Ilka, Lanzani, Guglielmo, Scotognella, Francesco
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 2020
Subjects
Charge density
Contaminants
E coli
Photonic crystals
Plasmonics
Silver
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Summary:Here, we show that a hybrid plasmonic/photonic crystal consisting of a thin layer of bioactive plasmonic material (i.e. silver) deposited on top a 1D PhC can detect one of the most common bacterial contaminant, namely Escherichia coli. We speculate that the change in the plasmon charge density brought about by metal/bacterium interaction results in a variation of the plasmon resonance that, in turns, translates in a shift of the photonic structural color.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202023807002