Improved surface-enhanced Raman scattering on arrays of gold quasi-3D nanoholes

Handle URI:
http://hdl.handle.net/10754/562359
Title:
Improved surface-enhanced Raman scattering on arrays of gold quasi-3D nanoholes
Authors:
Yue, Weisheng; Yang, Yang; Wang, Zhihong; Han, Jiaguang; Syed, Ahad A.; Chen, Longqing; Wong, KimChong; Wang, Xianbin
Abstract:
Arrays of gold quasi-3D nanoholes were proposed and fabricated as substrates for surface-enhanced Raman scattering (SERS). By detecting rhodamine 6G (R6G) molecules, the gold quasi-3D nanoholes demonstrated an SERS intensity that was 25-62 times higher than that of two-dimensional nanoholes with the same geometrical shapes and periodicities. The larger SERS enhancement of the quasi-3D nanoholes is attributed to the enhanced electromagnetic field on the top-layer nanohole, the bottom nanodiscs and the field coupling between the two layers. In addition, the investigation of the shape dependence of the SERS on the quasi-3D nanoholes demonstrated that the quadratic, circular, triangular and rhombic holes exhibited different SERS properties. Numerical simulations of the electromagnetic properties on the nanostructures were performed with CST Microwave Studio, and the results agree with the experimental observations. © 2012 IOP Publishing Ltd.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab; Core Labs
Publisher:
IOP Publishing
Journal:
Journal of Physics D: Applied Physics
Issue Date:
4-Oct-2012
DOI:
10.1088/0022-3727/45/42/425401
Type:
Article
ISSN:
00223727
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorYue, Weishengen
dc.contributor.authorYang, Yangen
dc.contributor.authorWang, Zhihongen
dc.contributor.authorHan, Jiaguangen
dc.contributor.authorSyed, Ahad A.en
dc.contributor.authorChen, Longqingen
dc.contributor.authorWong, KimChongen
dc.contributor.authorWang, Xianbinen
dc.date.accessioned2015-08-03T10:02:21Zen
dc.date.available2015-08-03T10:02:21Zen
dc.date.issued2012-10-04en
dc.identifier.issn00223727en
dc.identifier.doi10.1088/0022-3727/45/42/425401en
dc.identifier.urihttp://hdl.handle.net/10754/562359en
dc.description.abstractArrays of gold quasi-3D nanoholes were proposed and fabricated as substrates for surface-enhanced Raman scattering (SERS). By detecting rhodamine 6G (R6G) molecules, the gold quasi-3D nanoholes demonstrated an SERS intensity that was 25-62 times higher than that of two-dimensional nanoholes with the same geometrical shapes and periodicities. The larger SERS enhancement of the quasi-3D nanoholes is attributed to the enhanced electromagnetic field on the top-layer nanohole, the bottom nanodiscs and the field coupling between the two layers. In addition, the investigation of the shape dependence of the SERS on the quasi-3D nanoholes demonstrated that the quadratic, circular, triangular and rhombic holes exhibited different SERS properties. Numerical simulations of the electromagnetic properties on the nanostructures were performed with CST Microwave Studio, and the results agree with the experimental observations. © 2012 IOP Publishing Ltd.en
dc.publisherIOP Publishingen
dc.titleImproved surface-enhanced Raman scattering on arrays of gold quasi-3D nanoholesen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentCore Labsen
dc.identifier.journalJournal of Physics D: Applied Physicsen
dc.contributor.institutionCenter for Terahertz Waves, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, Chinaen
kaust.authorYue, Weishengen
kaust.authorYang, Yangen
kaust.authorWang, Zhihongen
kaust.authorChen, Longqingen
kaust.authorWang, Xianbinen
kaust.authorSyed, Ahad A.en
kaust.authorWong, KimChongen
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