Configuration-controlled Au nanocluster arrays on inverse micelle nano-patterns: versatile platforms for SERS and SPR sensors

Yoon Hee Jang, Kyungwha Chung, Li Na Quan, Barbora Špačková, Hana Šípová, Seyoung Moon, Won Joon Cho, Hae-Young Shin, Yu Jin Jang, Ji-Eun Lee, Saji Thomas Kochuveedu, Min Ji Yoon, Jihyeon Kim, Seokhyun Yoon, Jin Kon Kim, Donghyun Kim, Jiří Homola, Dong Ha Kim
Nanoscale 2013 December 21, 5 (24): 12261-71
Nanopatterned 2-dimensional Au nanocluster arrays with controlled configuration are fabricated onto reconstructed nanoporous poly(styrene-block-vinylpyridine) inverse micelle monolayer films. Near-field coupling of localized surface plasmons is studied and compared for disordered and ordered core-centered Au NC arrays. Differences in evolution of the absorption band and field enhancement upon Au nanoparticle adsorption are shown. The experimental results are found to be in good agreement with theoretical studies based on the finite-difference time-domain method and rigorous coupled-wave analysis. The realized Au nanopatterns are exploited as substrates for surface-enhanced Raman scattering and integrated into Kretschmann-type SPR sensors, based on which unprecedented SPR-coupling-type sensors are demonstrated.

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