Self-assembled plasmonic nanoring cavity arrays for SERS and LSPR biosensing

Hyungsoon Im; Kyle C. Bantz; Si Hoon Lee; Timothy W. Johnson; Christy L. Haynes; Sang Hyun Oh

doi:10.1002/adma.201204283

Self-assembled plasmonic nanoring cavity arrays for SERS and LSPR biosensing

Hyungsoon Im, Kyle C. Bantz, Si Hoon Lee, Timothy W. Johnson, Christy L. Haynes, Sang Hyun Oh

Research output: Contribution to journal › Article › peer-review

230 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	2678-2685
Number of pages	8
Journal	Advanced Materials
Volume	25
Issue number	19
DOIs	https://doi.org/10.1002/adma.201204283
State	Published - May 21 2013

Keywords

adenine
atomic layer deposition
localized surface plasmon resonance (LSPR)
nanogap
nanosphere lithography
surface-enhanced Raman scattering (SERS)

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title = "Self-assembled plasmonic nanoring cavity arrays for SERS and LSPR biosensing",

abstract = "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.",

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AU - Lee, Si Hoon

AU - Johnson, Timothy W.

AU - Haynes, Christy L.

AU - Oh, Sang Hyun

PY - 2013/5/21

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AB - 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.

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KW - atomic layer deposition

KW - localized surface plasmon resonance (LSPR)

KW - nanogap

KW - nanosphere lithography

KW - surface-enhanced Raman scattering (SERS)

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Self-assembled plasmonic nanoring cavity arrays for SERS and LSPR biosensing

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