| Nanocracking and metallization doubly defined large-scale 3D plasmonic sub-10 nm-gap arrays as extremely sensitive SERS substrates | |
| Pan RH; Yang Y; Wang YJ; Li S(李爽); Liu Z; Su YW(苏业旺); Quan BG; Li YL; Gu CZ; Li JJ | |
| Source Publication | NANOSCALE
 |
| 2018-02-21 | |
| Volume | 10Issue:7Pages:3171-3180 |
| ISSN | 2040-3364 |
| Abstract | Considering the technological difficulties in the existing approaches to form nanoscale gaps, a convenient method to fabricate three-dimensional (3D) sub-10 nm Ag/SiNx gap arrays has been demonstrated in this study, controlled by a combination of stress-induced nanocracking of a SiNx nanobridge and Ag nanofilm deposition. This scalable 3D plasmonic nanogap is specially suspended above a substrate, having a tunable nanogap width and large height-to-width ratio to form a nanocavity underneath. As a surface-enhanced Raman scattering (SERS) substrate, the 3D Ag/SiNx nanogap shows a large Raman enhancement factor of similar to 10(8) and extremely high sensitivity for the detection of Rhodamine 6G (R6G) molecules, even down to 10(-16) M, indicating an extraordinary capability for single-molecule detection. Further, we verified that the Fabry-Perot resonance occurred in the deep SiNx nanocavity under the Ag nanogap and contributed prominently to a tremendous enhancement of the local field in the Agnanogap zone and hence ultrasensitive SERS detection. This method circumvents the technological limitations to fabricate a sub-10 nm metal nanogap with unique features for wide applications in important scientific and technological areas. |
| DOI | 10.1039/c7nr08646f |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000425348100009 |
| WOS Keyword | SURFACE-ENHANCED RAMAN ; MOLECULAR JUNCTIONS ; LARGE-AREA ; SPECTROSCOPY ; SCATTERING ; FABRICATION ; MICROORGANISMS ; LITHOGRAPHY ; NANOANTENNA ; NANOGAPS |
| WOS Research Area | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS Subject | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| Funding Organization | Ministry of Science and Technology of China [2016YFA0200800, 2016YFA0200400, 2016YFB0100500] ; National Natural Science Foundation of China [11674387, 91323304, 11704401, 61390503, 11574385, 11574368] ; Strategic Priority Research Program of CAS [XDB07020200] ; Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH042] |
| Classification | 一类 |
| Ranking | 4 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/77803 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, CAS Key Lab Vacuum Phys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 4.Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Pan RH,Yang Y,Wang YJ,et al. Nanocracking and metallization doubly defined large-scale 3D plasmonic sub-10 nm-gap arrays as extremely sensitive SERS substrates[J]. NANOSCALE,2018,10,7,:3171-3180. |
| APA | Pan RH.,Yang Y.,Wang YJ.,李爽.,Liu Z.,...&Li JJ.(2018).Nanocracking and metallization doubly defined large-scale 3D plasmonic sub-10 nm-gap arrays as extremely sensitive SERS substrates.NANOSCALE,10(7),3171-3180. |
| MLA | Pan RH,et al."Nanocracking and metallization doubly defined large-scale 3D plasmonic sub-10 nm-gap arrays as extremely sensitive SERS substrates".NANOSCALE 10.7(2018):3171-3180. |
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| IrJ2018188.pdf（2356KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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