Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHu, Haien_US
dc.contributor.authorYang, Xiaoxiaen_US
dc.contributor.authorZhai, Fengen_US
dc.contributor.authorHu, Deboen_US
dc.contributor.authorLiu, Ruinaen_US
dc.contributor.authorLiu, Kaihuien_US
dc.contributor.authorSun, Zhipeien_US
dc.contributor.authorDai, Qingen_US
dc.contributor.departmentDepartment of Micro and Nanosciencesen
dc.contributor.groupauthorZhipei Sun Groupen
dc.contributor.organizationNational Center for Nanoscience and Technology Beijingen_US
dc.contributor.organizationZhejiang Normal Universityen_US
dc.contributor.organizationPeking Universityen_US
dc.date.accessioned2017-05-11T09:16:49Z
dc.date.available2017-05-11T09:16:49Z
dc.date.issued2016-07-27en_US
dc.description.abstractInfrared spectroscopy, especially for molecular vibrations in the fingerprint region between 600 and 1,500 cm -1, is a powerful characterization method for bulk materials. However, molecular fingerprinting at the nanoscale level still remains a significant challenge, due to weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. Here we demonstrate molecular fingerprinting at the nanoscale level using our specially designed graphene plasmonic structure on CaF 2 nanofilm. This structure not only avoids the plasmon-phonon hybridization, but also provides in situ electrically-tunable graphene plasmon covering the entire molecular fingerprint region, which was previously unattainable. In addition, undisturbed and highly confined graphene plasmon offers simultaneous detection of in-plane and out-of-plane vibrational modes with ultrahigh detection sensitivity down to the sub-monolayer level, significantly pushing the current detection limit of far-field mid-infrared spectroscopies. Our results provide a platform, fulfilling the long-awaited expectation of high sensitivity and selectivity far-field fingerprint detection of nano-scale molecules for numerous applications.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.extent1-8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHu, H, Yang, X, Zhai, F, Hu, D, Liu, R, Liu, K, Sun, Z & Dai, Q 2016, ' Far-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmons ', Nature Communications, vol. 7, 12334, pp. 1-8 . https://doi.org/10.1038/ncomms12334en
dc.identifier.doi10.1038/ncomms12334en_US
dc.identifier.issn2041-1723
dc.identifier.otherPURE UUID: fed6847a-6c02-4e2f-95be-8d7da7fc5d47en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/fed6847a-6c02-4e2f-95be-8d7da7fc5d47en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84979894409&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/11525099/ncomms12334.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/26001
dc.identifier.urnURN:NBN:fi:aalto-201705114376
dc.language.isoenen
dc.relation.ispartofseriesNATURE COMMUNICATIONSen
dc.relation.ispartofseriesVolume 7en
dc.rightsopenAccessen
dc.titleFar-field nanoscale infrared spectroscopy of vibrational fingerprints of molecules with graphene plasmonsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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