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

doi:10.1039/d0tc01394c

	Merging individual metal nanostructures into a superstructure for plasmon mode hybridization and electric-field nanofocusing
	Zhao, Zhihao 1,2; Xu, Guoheng 1,2,3; Zhang, Jiaming 1,3; Zhang, Yongliang 4; Liu, Jie 1,3; Lyu, Shuangbao 1,2,3; Cheng, Hongwei 1,3; Lei, Dangyuan 5; Duan, Jinglai 1,3,6
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2020-07-21
卷号	8 期号:27 页码:9293-9302
ISSN号	2050-7526
DOI	10.1039/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.
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关键词	NANOCONE ARRAYS ; GOLD ; FABRICATION ; RESONANCE ; SPECTROSCOPY ; SENSITIVITY ; NANOWIRES ; SIZE
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000549153600015
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
内容类型	期刊论文
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.