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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 623 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 616 | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Lee, Jiwon | - |
dc.contributor.author | Hua, Bo | - |
dc.contributor.author | Park, Seungyoung | - |
dc.contributor.author | Ha, Minjeong | - |
dc.contributor.author | Lee, Youngsu | - |
dc.contributor.author | Fan, Zhiyong | - |
dc.contributor.author | Ko, Hyunhyub | - |
dc.date.accessioned | 2023-12-22T03:08:49Z | - |
dc.date.available | 2023-12-22T03:08:49Z | - |
dc.date.created | 2014-01-03 | - |
dc.date.issued | 2014-01 | - |
dc.description.abstract | Plasmonic systems based on metal nanoparticles on a metal film have generated great interest for surface-enhanced Raman spectroscopy (SERS) chemical sensors. In this study, we describe the fabrication of ultrasensitive SERS substrates based on high-density gold nanostar assemblies on silver films with tailored surface plasmons, where multiple field enhancements from particle-film and interparticle plasmon couplings and lightening rod effects of sharp tips of nanostars contribute to the enormous Raman enhancements. We show that the interplay between interparticle and particle-film plasmon couplings of high-density gold nanostars (GNSs) on metal and dielectric films as a function of interparticle separation can be tailored to provide maximum SERS effects. We observe that the SERS enhancement factor (EF) of GNSs on a metal film as a function of interparticle separation follows a broken power law function, where the EF increases with the interparticle separation for the strong interparticle coupling range below an interparticle separation of ∼0.8 times the GNS size, but decreases for the weak interparticle coupling range (for an interparticle separation of >0.8 times the GNS size). Finally, we demonstrate the use of tailored plasmonic substrates as ultrasensitive SERS chemical sensors with an attomole level of detection capability of 2,4-dinitrotoluene, a model compound of nitroaromatic explosives. | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.6, no.1, pp.616 - 623 | - |
dc.identifier.doi | 10.1039/c3nr04752k | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.scopusid | 2-s2.0-84890225524 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2674 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84890225524 | - |
dc.identifier.wosid | 000328673000073 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Tailoring surface plasmons of high-density gold nanostar assemblies on metal films for surface-enhanced Raman spectroscopy | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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