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Merging individual metal nanostructures into a superstructure for plasmon mode hybridization and electric-field nanofocusing

文献类型：期刊论文

作者Zhao, Zhihao1,2; Xu, Guoheng1,2,3; Zhang, Jiaming1,3; Zhang, Yongliang4; Liu, Jie1,3; Lyu, Shuangbao1,2,3; Cheng, Hongwei1,3; Lei, Dangyuan5; Duan, Jinglai1,3,6
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2020-07-21
卷号8期号:27页码:9293-9302
ISSN号2050-7526
DOI10.1039/d0tc01394c
通讯作者Lei, Dangyuan(dangylei@cityu.edu.hk) ; Duan, Jinglai(j.duan@impcas.ac.cn)
英文摘要Geometry design based plasmon hybridization represents an efficient means for pursuing desired spectral response and near-field enhancement in hybrid structures. Here, we propose to merge individual metal nanostructures into a superstructure to simultaneously realize plasmon mode inheritance and hybridization and electric near-field nanofocusing. As a model demonstration, we combine a metal nanoring supporting two localized surface plasmon resonances (LSPRs) and a metal nanocone sustaining one LSPR and one propagating surface plasmon polaritons (SPPs) mode into a hollow nanocone superstructure, and show numerically that such superstructure exhibits multiple plasmon resonance bands in the visible and near-infrared range and efficient nanofocusing of electric near-fields to the nanocone open apex. We further fabricate the designed superstructure with an ion-track membrane template method that allows for flexible control over relevant structural parameters by varying track etching time. Dark-field scattering measurements on single hollow nanocones confirm the presence of multiple plasmon resonances; surface-enhanced Raman spectroscopy further corroborates that the nanofocusing of electric fields plays a critical role in signal enhancement. We believe that such multi-resonant plasmonic superstructures with efficient near-field nanofocusing capability can find great potential in fundamental nonlinear optics and hot-carrier science studies and practical applications in surface-enhanced spectroscopies and broadband solar light harvesting.
WOS关键词NANOCONE ARRAYS ; GOLD ; FABRICATION ; RESONANCE ; SPECTROSCOPY ; SENSITIVITY ; NANOWIRES ; SIZE
资助项目Outstanding Young Scientist Project, Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH010] ; National Natural Science Foundation of China[11975114] ; National Natural Science Foundation of China[11375241] ; National Natural Science Foundation of China[11675233] ; National Natural Science Foundation of China[11575261] ; National Natural Science Foundation of China[11705246] ; Research Grants Council of Hong Kong (CRF)[C6013-18G] ; City University of Hong Kong[9610434]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000549153600015
出版者ROYAL SOC CHEMISTRY
资助机构Outstanding Young Scientist Project, Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Research Grants Council of Hong Kong (CRF) ; City University of Hong Kong
源URL[http://119.78.100.186/handle/113462/140273]  
专题中国科学院近代物理研究所
通讯作者Lei, Dangyuan; Duan, Jinglai
作者单位1.Chinese Acad Sci, Inst Modern Phys, Mat Res Ctr, Lanzhou 730000, Peoples R China
2.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
4.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Peoples R China
5.City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China
6.Huizhou Res Ctr Ion Sci, Huizhou 516000, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Zhihao,Xu, Guoheng,Zhang, Jiaming,et al. Merging individual metal nanostructures into a superstructure for plasmon mode hybridization and electric-field nanofocusing[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(27):9293-9302.
APA Zhao, Zhihao.,Xu, Guoheng.,Zhang, Jiaming.,Zhang, Yongliang.,Liu, Jie.,...&Duan, Jinglai.(2020).Merging individual metal nanostructures into a superstructure for plasmon mode hybridization and electric-field nanofocusing.JOURNAL OF MATERIALS CHEMISTRY C,8(27),9293-9302.
MLA Zhao, Zhihao,et al."Merging individual metal nanostructures into a superstructure for plasmon mode hybridization and electric-field nanofocusing".JOURNAL OF MATERIALS CHEMISTRY C 8.27(2020):9293-9302.

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来源：近代物理研究所

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