Ultrasensitive and label-free molecular-level detection enabled by light phase control in magnetoplasmonic nanoantennas

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Maccaferri, Nicolò
dc.contributor.author Gregorczyk, Keith E.
dc.contributor.author de Oliveira, Thales V.A.G.
dc.contributor.author Kataja, Mikko
dc.contributor.author van Dijken, Sebastiaan
dc.contributor.author Pirzadeh, Zhaleh
dc.contributor.author Dmitriev, Alexandre
dc.contributor.author Åkerman, Johan
dc.contributor.author Knez, Mato
dc.contributor.author Vavassori, Paolo
dc.date.accessioned 2017-10-13T10:33:45Z
dc.date.available 2017-10-13T10:33:45Z
dc.date.issued 2015-02
dc.identifier.citation Maccaferri , N , Gregorczyk , K E , de Oliveira , T V A G , Kataja , M , van Dijken , S , Pirzadeh , Z , Dmitriev , A , Åkerman , J , Knez , M & Vavassori , P 2015 , ' Ultrasensitive and label-free molecular-level detection enabled by light phase control in magnetoplasmonic nanoantennas ' NATURE COMMUNICATIONS , vol 6 , 6150 , pp. 1-8 . DOI: 10.1038/ncomms7150 en
dc.identifier.issn 2041-1723
dc.identifier.other PURE UUID: 44ccee14-5ae7-4d60-ab26-e01315f95123
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/ultrasensitive-and-labelfree-molecularlevel-detection-enabled-by-light-phase-control-in-magnetoplasmonic-nanoantennas(44ccee14-5ae7-4d60-ab26-e01315f95123).html
dc.identifier.other PURE LINK: http://www.nature.com/ncomms/2015/150202/ncomms7150/full/ncomms7150.html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/14820620/ncomms7150_1.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/28169
dc.description.abstract Systems allowing label-free molecular detection are expected to have enormous impact on biochemical sciences. Research focuses on materials and technologies based on exploiting localized surface plasmon resonances in metallic nanostructures. The reason for this focused attention is their suitability for single-molecule sensing, arising from intrinsically nanoscopic sensing volume and the high sensitivity to the local environment. Here we propose an alternative route, which enables radically improved sensitivity compared with recently reported plasmon-based sensors. Such high sensitivity is achieved by exploiting the control of the phase of light in magnetoplasmonic nanoantennas. We demonstrate a manifold improvement of refractometric sensing figure-of-merit. Most remarkably, we show a raw surface sensitivity (that is, without applying fitting procedures) of two orders of magnitude higher than the current values reported for nanoplasmonic sensors. Such sensitivity corresponds to a mass of ~0.8 ag per nanoantenna of polyamide-6.6 (n=1.51), which is representative for a large variety of polymers, peptides and proteins. en
dc.format.extent 8
dc.format.extent 1-8
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries NATURE COMMUNICATIONS en
dc.relation.ispartofseries Volume 6 en
dc.rights openAccess en
dc.subject.other 114 Physical sciences en
dc.subject.other 221 Nanotechnology en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 218 Environmental engineering en
dc.title Ultrasensitive and label-free molecular-level detection enabled by light phase control in magnetoplasmonic nanoantennas en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword magnetism
dc.subject.keyword molecular detection
dc.subject.keyword plasmonics
dc.subject.keyword 114 Physical sciences
dc.subject.keyword 221 Nanotechnology
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 218 Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201710137030
dc.identifier.doi 10.1038/ncomms7150
dc.type.version publishedVersion

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