Publication
Title
Controlled living nanowire growth : precise control over the morphology and optical properties of AgAuAg bimetallic nanowires
Author
Abstract
Inspired by the concept of living polymerization reaction, we are able to produce silvergoldsilver nanowires with a precise control over their total length and plasmonic properties by establishing a constant silver deposition rate on the tips of penta-twinned gold nanorods used as seed cores. Consequently, the length of the wires increases linearly in time. Starting with ∼210 nm × 32 nm gold cores, we produce nanowire lengths up to several microns in a highly controlled manner, with a small self-limited increase in thickness of ∼4 nm, corresponding to aspect ratios above 100, whereas the low polydispersity of the product allows us to detect up to nine distinguishable plasmonic resonances in a single colloidal solution. We analyze the spatial distribution and the nature of the plasmons by electron energy loss spectroscopy and obtain excellent agreement between measurements and electromagnetic simulations, clearly demonstrating that the presence of the gold core plays a marginal role, except for relatively short wires or high-energy modes.
Language
English
Source (journal)
Nano letters / American Chemical Society. - Washington
Publication
Washington : 2015
ISSN
1530-6984
Volume/pages
15:8(2015), p. 5427-5437
ISI
000359613700087
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 19.12.2015
Last edited 16.07.2017
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