Self-Assembled Plasmonic Nanoring Cavity Arrays for SERS and LSPR Biosensing

被引：254
作者：
Im, Hyungsoon [1 ]
Bantz, Kyle C. [2 ]
Lee, Si Hoon [3 ]
Johnson, Timothy W. [1 ]
Haynes, Christy L. [2 ]
Oh, Sang-Hyun [1 ,3 ,4 ]
机构：
[1] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
[3] Univ Minnesota, Dept Biomed Engn, Minneapolis, MN 55455 USA
[4] Seoul Natl Univ, Dept Biophys & Chem Biol, Seoul 151747, South Korea
来源：
ADVANCED MATERIALS | 2013年 / 25卷 / 19期
关键词：
surface-enhanced Raman scattering (SERS); localized surface plasmon resonance (LSPR); nanogap; nanosphere lithography; atomic layer deposition; adenine; ENHANCED RAMAN-SCATTERING; ADENOSINE-TRIPHOSPHATE; ANTHRAX BIOMARKER; IN-VIVO; SPECTROSCOPY; GAPS; IDENTIFICATION; ORIENTATION; TOOL;
D O I：
10.1002/adma.201204283
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：2678 / 2685
页数：8
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