Fabrication and characterization of gold-polymer nanocomposite plasmonic nanoarrays in a porous alumina template.
A facile, cost-effective, and manufacturable method to produce gold-polymer nanocomposite plasmonic nanorod arrays in high-aspect-ratio nanoporous alumina templates is reported, where the formation of gold nanoparticles and the polymerization of a photosensitive polymer by ultraviolet light are simultaneously performed. Transverse mode coupling within a two-dimensional array of the nanocomposite rods results in a progression of resonant modes in the visible and infrared spectral regions when illuminated at normal incidence, a phenomenon previously observed in nanoarrays of solid gold rods in an alumina template. Finite element full-wave analysis in a three-dimensional computational domain confirms our hypothesis that nanoparticles, arranged in a columnar structure, will show a response similar to that of solid gold rods. These studies demonstrate a new simple method of plasmonic nanoarray fabrication, apparently obviating the need for a cumbersome electrochemical process to grow nanoarrays.
Shukla
Shobha
S
Department of Electrical Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.
Kim
Kyoung-Tae
KT
Baev
A
A
Yoon
Y K
YK
Litchinitser
N M
NM
Prasad
P N
PN
D000537:Aluminum Oxide / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D055620:Optical Phenomena; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D013057:Spectrum Analysis
D011108:Polymers; D006046:Gold; D000537:Aluminum Oxide