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

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...

Full description

Saved in:
Bibliographic Details
Published inScientific reports Vol. 3; no. 1; p. 2437
Main Authors Tobing, Landobasa Y. M., Tjahjana, Liliana, Zhang, Dao Hua, Zhang, Qing, Xiong, Qihua
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 14.08.2013
Nature Publishing Group
Subjects
639/166/987
639/301/1005/1009
639/624/399/1015
639/925/927/1021
Biosensing Techniques - instrumentation
Biosensors
Electricity
Fabrication
Gold - chemistry
Humanities and Social Sciences
Illumination
Light
Localization
Magnetic Phenomena
multidisciplinary
Refractometry
Rotation
Science
Spectrum analysis
Online AccessGet full text

Cover

More Information
Summary: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 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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:2045-2322
2045-2322
DOI:10.1038/srep02437