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Self‐Assembled Plasmonic Nanoring Cavity Arrays for SERS and LSPR Biosensing
Author(s) -
Im Hyungsoon,
Bantz Kyle C.,
Lee Si Hoon,
Johnson Timothy W.,
Haynes Christy L.,
Oh SangHyun
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201204283
Subject(s) - nanoring , materials science , plasmon , biosensor , surface plasmon resonance , nanotechnology , nanostructure , nanosphere lithography , optoelectronics , nanopillar , analyte , surface plasmon , nanoparticle , fabrication , medicine , chemistry , alternative medicine , pathology
Self‐assembled plasmonic nanoring cavity arrays are formed alongside the curvature of highly packed metallic nanosphere gratings. The sub‐10‐nm gap size is precisely tuned via atomic layer deposition and highly ordered arrays are produced over a cm‐sized area. The resulting hybrid nanostructure boosts coupling efficiency of light into plasmons, and shows an improved SERS detection limit. These substrates are used for SERS detection of the biological analyte, adenine, followed by concurrent localized surface plasmon resonance sensing.