Chemical coating of large-area Au nanoparticle two-dimensional arraysas plasmon-resonant optics

Innovative nanophotonic applications require a technique for generating not a nanometer-scale point but a large-area ( mm 2 − m 2 ) near-field light source. We succeeded in developing a large-area near-field light source that is densely constructed of uniform-size gold nanoparticles (AuNPs) two-dime...

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Bibliographic Details
Published in:Applied physics letters 2010-11, Vol.97 (22), p.221101-221101-3
Main Authors: Isozaki, Katsuhiro, Ochiai, Takao, Taguchi, Tomoya, Nittoh, Koh-ichi, Miki, Kazushi
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Summary:Innovative nanophotonic applications require a technique for generating not a nanometer-scale point but a large-area ( mm 2 − m 2 ) near-field light source. We succeeded in developing a large-area near-field light source that is densely constructed of uniform-size gold nanoparticles (AuNPs) two-dimensionally arrayed with regular interparticle gaps, which has tunable localized surface plasmon resonance bands (600-1100 nm). The near-field excitation properties based on the optical tunability of the AuNP two-dimensional arrays demonstrate that our chemical coating of large-area near-field light sources is widely applicable such as for high-sensitivity optical sensors and high-efficiency solar cells.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3518469