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DC Field | Value | Language |
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dc.citation.endPage | 9584 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 9574 | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Lee, Jung-Hoon | - |
dc.contributor.author | Nam, Jwa-Min | - |
dc.contributor.author | Jeon, Ki-Seok | - |
dc.contributor.author | Lim, Dong-Kwon | - |
dc.contributor.author | Kim, Hyoki | - |
dc.contributor.author | Kwon, Sunghoon | - |
dc.contributor.author | Lee, Haemi | - |
dc.contributor.author | Suh, Yung Doug | - |
dc.date.accessioned | 2023-12-22T04:37:15Z | - |
dc.date.available | 2023-12-22T04:37:15Z | - |
dc.date.created | 2022-01-24 | - |
dc.date.issued | 2012-11 | - |
dc.description.abstract | We extensively, study the relationships between single-molecule surface-enhanced Raman scattering (SMSERS) intensity, enhancement factor (EF) distribution over many particles, Interparticle distance, particle size/shape/composition and excitation laser wavelength using the single-particle AFM-correlated Raman measurement method and theoretical calculations. Two different single-DNA-tethered Au-Ag core-shell nanodumbbell (GSND) designs with an engineerable nanogap were used In this study: the GSND-I with various interparticle nanogaps from similar to 4.8 nm to < 1 nm or with no gap and the GSND-II with the fixed interparticle gap size and varying particle size from a 23-30 nm pair to a 50-60 nm pair. From the GSND-I, we learned that synthesizing a < 1 um gap is a key to obtain strong SMSERS signals with a narrow EF value distribution. Importantly, in the case of the GSND-I with < 1 nm interparticle gap, an EF value of as high as 5.9 x 10(13) (average value = 1.8 x 10(12)) was obtained and the EF values of analyzed particles were narrowly distributed between 19 x 10(12) and 5.9 x 10(13). In the case of the GSND-II probes, a combination of > 50 nm Au cores and 514.5 nm laser wavelength that matches well with Ag shell generated stronger SMSERS signals with a more narrow EF distribution than < 50 nm Au. cores with 514.3 nm laser or the GSND-II structures with 632.8 nm laser. Our results show the usefulness and flexibility of these GSND structures In studying and obtaining SMSERS structures with a narrow distribution of high EF values and that the GSNDs with < 1 nm are promising SERS probes with highly sensitive and quantitative detection capability when optimally designed. | - |
dc.identifier.bibliographicCitation | ACS NANO, v.6, no.11, pp.9574 - 9584 | - |
dc.identifier.doi | 10.1021/nn3028216 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.scopusid | 2-s2.0-84870473713 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58769 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/nn3028216 | - |
dc.identifier.wosid | 000311521700026 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Tuning and Maximizing the Single-Molecule Surface-Enhanced Raman Scattering from DNA-Tethered Nanodumbbells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | single-molecule detection | - |
dc.subject.keywordAuthor | nanogap | - |
dc.subject.keywordAuthor | core-shell particle | - |
dc.subject.keywordAuthor | enhancement factor | - |
dc.subject.keywordAuthor | plasmonic probe | - |
dc.subject.keywordAuthor | surface-enhanced Raman scattering | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | FINGERPRINTS | - |
dc.subject.keywordPlus | JUNCTIONS | - |
dc.subject.keywordPlus | PLASMONS | - |
dc.subject.keywordPlus | RANGE | - |
dc.subject.keywordPlus | GOLD-NANOPARTICLE DIMERS | - |
dc.subject.keywordPlus | SILVER NANOSPHERES | - |
dc.subject.keywordPlus | HOT-SPOTS | - |
dc.subject.keywordPlus | SERS | - |
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