Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/90119
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dc.contributor.authorPhan-Quang, Gia Chuongen
dc.contributor.authorLee, Hiang Kweeen
dc.contributor.authorTeng, Hao Wenen
dc.contributor.authorKoh, Charlynn Sher Linen
dc.contributor.authorYim, Barnabas Qinweien
dc.contributor.authorTan, Eddie Khay Mingen
dc.contributor.authorTok, Wee Leeen
dc.contributor.authorPhang, In Yeeen
dc.contributor.authorLing, Xing Yien
dc.date.accessioned2019-05-28T03:16:31Zen
dc.date.accessioned2019-12-06T17:41:03Z-
dc.date.available2019-05-28T03:16:31Zen
dc.date.available2019-12-06T17:41:03Z-
dc.date.issued2018en
dc.identifier.citationPhan-Quang, G. C., Lee, H. K., Teng, H. W., Koh, C. S. L., Yim, B. Q., Tan, E. K. M., . . . Ling, X. Y. (2018). Plasmonic hotspots in air : an omnidirectional three-dimensional platform for stand-off in-air sers sensing of airborne species. Angewandte Chemie International Edition, 57(20), 5792-5796. doi:10.1002/anie.201802214en
dc.identifier.issn1433-7851en
dc.identifier.urihttps://hdl.handle.net/10356/90119-
dc.description.abstractMolecular‐level airborne sensing is critical for early prevention of disasters, diseases, and terrorism. Currently, most 2D surface‐enhanced Raman spectroscopy (SERS) substrates used for air sensing have only one functional surface and exhibit poor SERS‐active depth. “Aerosolized plasmonic colloidosomes” (APCs) are introduced as airborne plasmonic hotspots for direct in‐air SERS measurements. APCs function as a macroscale 3D and omnidirectional plasmonic cloud that receives laser irradiation and emits signals in all directions. Importantly, it brings about an effective plasmonic hotspot in a length scale of approximately 2.3 cm, which affords 100‐fold higher tolerance to laser misalignment along the z‐axis compared with 2D SERS substrates. APCs exhibit an extraordinary omnidirectional property and demonstrate consistent SERS performance that is independent of the laser and analyte introductory pathway. Furthermore, the first in‐air SERS detection is demonstrated in stand‐off conditions at a distance of 200 cm, highlighting the applicability of 3D omnidirectional plasmonic clouds for remote airborne sensing in threatening or inaccessible areas.en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent5 p.en
dc.language.isoenen
dc.relation.ispartofseriesAngewandte Chemie International Editionen
dc.rightsThis is the peer reviewed version of the following article: Phan-Quang, G. C., Lee, H. K., Teng, H. W., Koh, C. S. L., Yim, B. Q., Tan, E. K. M., . . . Ling, X. Y. (2018). Plasmonic hotspots in air : an omnidirectional three-dimensional platform for stand-off in-air sers sensing of airborne species. Angewandte Chemie International Edition, 57(20), 5792-5796, which has been published in final form at http://dx.doi.org/10.1002/anie.201802214. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en
dc.subjectAirborne Molecular Speciesen
dc.subjectDRNTU::Science::Chemistryen
dc.subjectAerosolsen
dc.titlePlasmonic hotspots in air : an omnidirectional three-dimensional platform for stand-off in-air sers sensing of airborne speciesen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.identifier.doi10.1002/anie.201802214en
dc.description.versionAccepted versionen
item.grantfulltextopen-
item.fulltextWith Fulltext-
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