Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics

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dc.citation.journalTitleScientific Reportsen_US
dc.citation.volumeNumber5en_US
dc.contributor.authorXie, Lijuanen_US
dc.contributor.authorGao, Weiluen_US
dc.contributor.authorShu, Jieen_US
dc.contributor.authorYing, Yibinen_US
dc.contributor.authorKono, Junichiroen_US
dc.date.accessioned2015-05-15T17:06:33Zen_US
dc.date.available2015-05-15T17:06:33Zen_US
dc.date.issued2015en_US
dc.description.abstractWe have detected trace amounts of molecules of antibiotics (kanamycin sulfate) dispersed on metasurfaces with terahertz (THz) spectroscopy. Utilizing the extraordinary optical transmission resonance of an array of square-shaped slits on a silicon substrate at ~0.3 THz, we were able to monitor varying concentrations of kanamycin sulfate as low as ~100 picogram/L. In contrast, the lowest detectable concentration of kanamycin sulfate on silicon without any metallic structure was ~1 gram/L. This dramatic ~1010 times enhancement of sensitivity is due to the near-field enhancement of THz electric fields by the metamaterial structure. This result thus demonstrates the power and usefulness of metamaterial-assisted THz spectroscopy in trace molecular detection for biological and chemical sensing as well as for food product quality and safety inspection and control.en_US
dc.identifier.citationXie, Lijuan, Gao, Weilu, Shu, Jie, et al.. "Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics." <i>Scientific Reports,</i> 5, (2015) Nature Publishing Group: http://dx.doi.org/10.1038/srep08671.en_US
dc.identifier.doihttp://dx.doi.org/10.1038/srep08671en_US
dc.identifier.urihttps://hdl.handle.net/1911/80220en_US
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordimaging and sensingen_US
dc.subject.keywordrisk factorsen_US
dc.titleExtraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibioticsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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