Please use this identifier to cite or link to this item: https://doi.org/10.1021/nn304860t
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dc.titleUltrasensitive broadband probing of molecular vibrational modes with multifrequency optical antennas
dc.contributor.authorAouani, H.
dc.contributor.authorŠípová, H.
dc.contributor.authorRahmani, M.
dc.contributor.authorNavarro-Cia, M.
dc.contributor.authorHegnerová, K.
dc.contributor.authorHomola, J.
dc.contributor.authorHong, M.
dc.contributor.authorMaier, S.A.
dc.date.accessioned2014-10-07T04:38:58Z
dc.date.available2014-10-07T04:38:58Z
dc.date.issued2013-01-22
dc.identifier.citationAouani, H., Šípová, H., Rahmani, M., Navarro-Cia, M., Hegnerová, K., Homola, J., Hong, M., Maier, S.A. (2013-01-22). Ultrasensitive broadband probing of molecular vibrational modes with multifrequency optical antennas. ACS Nano 7 (1) : 669-675. ScholarBank@NUS Repository. https://doi.org/10.1021/nn304860t
dc.identifier.issn19360851
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/83242
dc.description.abstractOptical antennas represent an enabling technology for enhancing the detection of molecular vibrational signatures at low concentrations and probing the chemical composition of a sample in order to identify target molecules. However, efficiently detecting different vibrational modes to determine the presence (or the absence) of a molecular species requires a multispectral interrogation in a window of several micrometers, as many molecules present informative fingerprint spectra in the mid-infrared between 2.5 and 10 μm. As most nanoantennas exhibit a narrow-band response because of their dipolar nature, they are not suitable for such applications. Here, we propose the use of multifrequency optical antennas designed for operating with a bandwidth of several octaves. We demonstrate that surface-enhanced infrared absorption gains in the order of 105 can be easily obtained in a spectral window of 3 μm with attomolar concentrations of molecules, providing new opportunities for ultrasensitive broadband detection of molecular species via vibrational spectroscopy techniques. © 2012 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/nn304860t
dc.sourceScopus
dc.subjectbroadband optical antenna
dc.subjectfield enhancement
dc.subjectnanoantenna
dc.subjectplasmonic
dc.subjectSEIRA
dc.subjectvibrational spectroscopy
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1021/nn304860t
dc.description.sourcetitleACS Nano
dc.description.volume7
dc.description.issue1
dc.description.page669-675
dc.identifier.isiut000314082800071
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