Au nanoring arrays with tunable morphological features and plasmonic resonances  

作　　者：Shilin Mu Hongxu Chen Chenyu Shi Junhu Zhang Bai Yang 

机构地区：[1]State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun,130012,China [2]College of Material and Textile Engineering,Jiaxing University,Jiaxing,314001,China

出　　处：《Nano Research》2021年第12期4674-4679,共6页纳米研究（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.21774043,21975098,and51905526);the Fundamental Research Funds for the Central Universities(JLU)and the Program for JLU Science and Technology Innovation Research Team(No.2017TD-06);Jiaxing Science and Technology Project(No.2020AY10018).

摘　　要：Gold nanoring arrays are widely applied in various fields benefitting from their localized surface plasmon resonance(LSPR)properties.A key advantage of gold nanoring arrays is that the dipole resonance peak can be systematically tuned by changing the dimensions of gold nanoring arrays.However,most of the currently reported methods for preparing gold nanoring arrays cannot conveniently control the heights of the nanorings at a low cost.Here we introduce a facile method for preparing gold nanoring arrays with tunable plasmonic resonances using colloidal lithography.The dimensions of the nanorings including diameters,lattice constants,even the heights of the nanorings can be conveniently varied.Fourier transform near-infrared(FT-NIR)absorption spectroscopy was used to obtain the plasmonic resonance spectra of the nanoring arrays.All the prepared gold nanoring arrays exhibited a strong NIR or infrared(IR)plasmonic resonance which can be tuned by varying the nanoring dimensions.This versatile method can also be used to fabricate other types of plasmonic nanostructures,such as gold nanocone arrays.The obtained gold nanoring arrays as well as nanocone arrays may have potential applications in surface-enhanced spectroscopy or plasmonic sensing.

关 键 词：gold nanoring arrays plasmonic resonance colloidal lithography SELF-ASSEMBLY metal nanostructure arrays 

分 类 号：TB383[一般工业技术—材料科学与工程]