Free-Standing Bimetallic Nanorings and Nanoring Arrays Made by On-Wire Lithography

被引：51

作者：

Liusman, Cipto ^{[1
,2
,3
]}

Li, Shuzhou ^{[2
,3
]}

Chen, Xiaodong ^{[1
,4
]}

Wei, Wei ^{[2
,3
]}

Zhang, Hua ^{[1
,4
]}

Schatz, George C. ^{[2
,3
]}

Boey, Freddy ^{[1
,4
]}

Mirkin, Chad A. ^{[2
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA

[4] Nanyang Technol Univ, Ctr Biomimet Sensor Sci, Singapore 637553, Singapore

来源：

ACS NANO | 2010年 / 4卷 / 12期

关键词：

nanorings; nanoring arrays; on-wire lithography; galvanic replacement reaction; surface-enhanced Raman scattering; GOLD NANORINGS; SILVER; SURFACE; NANOSTRUCTURES; FABRICATION; NANOPARTICLES; TEMPLATES; NANORODS; ENERGY;

D O I：

10.1021/nn102495f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper describes a new strategy for synthesizing free-standing bimetallic nanorings and nanoring arrays based upon on-wire lithography and a galvanic replacement reaction. The strategy allows one to tune the diameter, length, and therefore aspect ratio of the nanorings. In addition, it can be used to produce arrays of nanorings in high yield with control over number and spacing. Spectroscopic studies and discrete dipole approximation calculations show that nanoring dimers exhibit greater surface enhanced Raman scattering than the analogous nanodisk dimers.

引用

页码：7676 / 7682

页数：7

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