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dc.contributor.authorXie, Lijuan
Gao, Weilu
Shu, Jie
Ying, Yibin
Kono, Junichiro
dc.date.accessioned 2015-05-15T17:06:33Z
dc.date.available 2015-05-15T17:06:33Z
dc.date.issued 2015
dc.identifier.citation Xie, Lijuan, Gao, Weilu, Shu, Jie, et al.. "Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics." Scientific Reports, 5, (2015) Nature Publishing Group: http://dx.doi.org/10.1038/srep08671.
dc.identifier.urihttps://hdl.handle.net/1911/80220
dc.description.abstract We 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.
dc.language.iso eng
dc.publisher Nature Publishing Group
dc.rights Article 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.
dc.title Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics
dc.type Journal article
dc.contributor.funder National Natural Science Foundation of China
dc.contributor.funder Zhejiang Province Key Laboratory of Transplanting Equipment and Technology
dc.citation.journalTitle Scientific Reports
dc.subject.keywordimaging and sensing
risk factors
dc.citation.volumeNumber 5
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1038/srep08671
dc.identifier.pmcid PMC4345331
dc.identifier.pmid 25728144
dc.identifier.grantID 31471410 (National Natural Science Foundation of China)
dc.identifier.grantID 2013E10013 (Zhejiang Province Key Laboratory of Transplanting Equipment and Technology)
dc.type.publication publisher version


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