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Deep subwavelength fourfold rotationally symmetric split-ring-resonator metamaterials for highly sensitive and robust biosensing platform.

ABSTRACT: Metamaterials provide a good platform for biochemical sensing due to its strong field localization at nanoscale. In this work, we show that electric and magnetic resonant modes in split-ring-resonator (SRR) can be efficiently excited under unpolarized light illumination when the SRRs are arranged in fourfold rotationally symmetric lattice configuration. The fabrication and characterization of deep subwavelength (~?/15) gold-based SRR structures with resonator size as small as ~ 60?nm are reported with magnetic resonances in Vis-NIR spectrum range. The feasibility for sensing is demonstrated with refractive index sensitivity as high as ~ 636?nm/RIU.

SUBMITTER: Tobing LY

PROVIDER: S-EPMC3743072 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Deep subwavelength fourfold rotationally symmetric split-ring-resonator metamaterials for highly sensitive and robust biosensing platform.

Tobing Landobasa Y M LY Tjahjana Liliana L Zhang Dao Hua DH Zhang Qing Q Xiong Qihua Q

Scientific reports 20130101

Metamaterials provide a good platform for biochemical sensing due to its strong field localization at nanoscale. In this work, we show that electric and magnetic resonant modes in split-ring-resonator (SRR) can be efficiently excited under unpolarized light illumination when the SRRs are arranged in fourfold rotationally symmetric lattice configuration. The fabrication and characterization of deep subwavelength (~λ/15) gold-based SRR structures with resonator size as small as ~ 60 nm are reporte ...[more]

PMID: 23942416

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