Electrochemically fabricated nanovolcano arrays for SERS applications. (2nd October 2012)

• Record Type: Journal Article
• Authors: Tsang, Chun Kwan; Shu, Shiwei; Liang, Fengxia; Zhang, Jie; Zheng, Lingxia; Li, Yang Yang
• Is Part Of: Journal of Raman spectroscopy. Volume 44:Number 1(2013:Jan.)
• Page Start: 29
• Page End: 34
• Publication Date: 2012-10-02
• Subjects: Raman spectroscopy -- Periodicals; 535.846
• DOI: 10.1002/jrs.4146
• Languages: English
• ISSNs: 0377-0486

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Nanovolcano arrays were fabricated by electrodepositing Ni/Cu alloys into a monolayer of self‐assembled nanospheres and then electrochemically etching the deposited alloy film. The fabricated nanovolcano arrays feature highly ordered hexagonally arranged concave nanobowls decorated with triangular nanopores at their interstices. After coated with Ag, the nanovolcano arrays serve as high‐performance substrates for surface enhancement Raman spectroscopy (SERS) measurements. The experimental study shows that the structural features of the nanovolcano arrays, including concave nanobowls, nanopores, and their long‐range orders, all contribute to the observed strong SERS enhancement in a synergetic manner, which is further confirmed by the simulation results obtained using the finite‐difference time‐domain method. Copyright © 2012 John Wiley &amp; Sons, Ltd.</p> </abstract>