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Research Paper

Ordered Au Nanodisk and Nanohole Arrays: Fabrication and Applications

[+] Author and Article Information
Yue Bing Zheng

Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802yzz113@psu.edu

Bala Krishna Juluri

Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802bxj139@psu.edu

Brian Kiraly

Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802btk5051@psu.edu

Tony Jun Huang

Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802junhuang@psu.edu

J. Nanotechnol. Eng. Med 1(3), 031011 (Aug 23, 2010) (4 pages) doi:10.1115/1.4002221 History: Received June 24, 2010; Revised July 08, 2010; Published August 23, 2010; Online August 23, 2010

We have utilized nanosphere lithography (NSL) to fabricate ordered Au nanodisk and nanohole arrays on substrates and have studied the localized surface plasmon resonance (LSPR) of the arrays. Through these investigations, we demonstrate that the angle-dependent behavior of the LSPR in the Au nanodisk arrays enables real-time observation of exciton-plasmon couplings. In addition, we show that the NSL-fabricated Au nanohole arrays can be applied as templates for patterning micro-/nanoparticles under capillary force. The unique structural and plasmonic characteristics of the Au nanodisk and nanohole arrays, as well as the low-cost and high-throughput NSL-based nanofabrication technique, render these arrays excellent platforms for numerous engineering applications.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figure 1

(a) Fabrication procedure for ordered Au nanodisk arrays and (b) fabrication procedure for ordered Au nanohole arrays

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Figure 2

(a) A SEM image of Au nanodisk array, (b) schematic of measuring angle-dependent spectra, (c) angle-dependent spectra of bare Au nanodisk array, and (d) angle-dependent spectra of array of nanodisk-J-aggregate complexes. The dashed line curve is the extinction spectrum of J-aggregates.

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Figure 3

(a) Schematic of working mechanism of patterning of particles on Au nanohole array, (b) an optical microscopy image of Au nanohole array, (c) a SEM image of Au nanohole array, and (d) a SEM image showing the particles confined in the holes

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