Detection of DNA hybridization with LSPR induced by surface relief nanostructure and particle plasmon

Seyoung Moon; Youngjin Oh; Kyungjae Ma; Donghyun Kim; Hosub Lee; Kangtaek Lee

doi:10.1117/12.860367

24 August 2010 Detection of DNA hybridization with LSPR induced by surface relief nanostructure and particle plasmon

Seyoung Moon, Youngjin Oh, Kyungjae Ma, Donghyun Kim, Hosub Lee, Kangtaek Lee

Proceedings Volume 7759, Biosensing III; 775913 (2010) https://doi.org/10.1117/12.860367
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

DNA hybridization can be measured with enhanced sensitivity based on localized surface plasmon (LSP) induced by surface nanowire structure. Changes made to the structure result in higher plasmon momentum, which can be coupled to a particle plasmon induced by gold nanoparticles to which DNA molecules are adsorbed. With the insight gained from near-field pattern via calculation, target localization effect is also experimentally shown. We expect that orders of magnitude can be improved in terms of sensitivity if one is to combine the effect of particle-to-LSP coupling and target localization scheme.

Citation Download Citation

Seyoung Moon, Youngjin Oh, Kyungjae Ma, Donghyun Kim, Hosub Lee, and Kangtaek Lee "Detection of DNA hybridization with LSPR induced by surface relief nanostructure and particle plasmon", Proc. SPIE 7759, Biosensing III, 775913 (24 August 2010); https://doi.org/10.1117/12.860367

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