Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics
dc.citation.journalTitle | Scientific Reports | |
dc.citation.volumeNumber | 5 | |
dc.contributor.author | Xie, Lijuan | |
dc.contributor.author | Gao, Weilu | |
dc.contributor.author | Shu, Jie | |
dc.contributor.author | Ying, Yibin | |
dc.contributor.author | Kono, Junichiro | |
dc.date.accessioned | 2015-05-15T17:06:33Z | |
dc.date.available | 2015-05-15T17:06:33Z | |
dc.date.issued | 2015 | |
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.identifier.citation | Xie, 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. | |
dc.identifier.doi | http://dx.doi.org/10.1038/srep08671 | |
dc.identifier.uri | https://hdl.handle.net/1911/80220 | |
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.subject.keyword | imaging and sensing | |
dc.subject.keyword | risk factors | |
dc.title | Extraordinary sensitivity enhancement by metasurfaces in terahertz detection of antibiotics | |
dc.type | Journal article | |
dc.type.dcmi | Text | |
dc.type.publication | publisher version |
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