Localized surface plasmon resonance in two-dimensional silver nanodot array fabricated using nanoporous alumina mask for chemical sensor platform

被引：6
|
作者：
Jung, Mi [1 ]
Ji, Myung-Gi [2 ]
Kim, Tae-Ryong [2 ]
Shim, Cheol-Hwee [3 ]
Lee, Seok [4 ]
Woo, Deokha [4 ]
Choi, Young-Wan [1 ,2 ]
机构：
[1] Chung Ang Univ, Inst Innovat Funct Imaging, 84 Heukseok Ro, Seoul 06974, South Korea
[2] Chung Ang Univ, Sch Elect & Elect Engn, 84 Heukseok Ro, Seoul 06974, South Korea
[3] Korea Inst Sci & Technol, Adv Anal Ctr, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea
[4] Korea Inst Sci & Technol, Sensor Syst Res Ctr, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
localized surface plasmon resonance; silver nanodot array; chemical sensor platform; nanoporous alumina mask; methylene blue; ENHANCED RAMAN-SCATTERING; REDUCED GRAPHENE OXIDE; ANODIC POROUS ALUMINA; METHYLENE-BLUE; NANOPARTICLES; NANOCOMPOSITES; SPECTROSCOPY; LITHOGRAPHY; BIOSENSORS; THERAPY;
D O I：
10.1117/1.OE.55.8.087107
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two-dimensional (2-D) metal nanodot arrays (NDAs) have been attracting significant attention for use in biological and chemical sensing applications. The unique optical properties of the metal NDAs originate from their localized surface plasmon resonance (LSPR). Nanofabrication methods that use nanoporous alumina masks (NAMs) have been widely used to produce metal NDAs. We report a fabrication technique for a 2-D Ag NDA and its utilization as a platform for LSPR-based sensing applications. A well-ordered Ag NDA of similar to 70-nm diameter, arranged in a periodic pattern of 105 nm, was fabricated on an indium tin oxide (ITO) glass substrate using an NAM as an evaporation mask. The LSPR of the Ag NDA on the ITO glass was investigated using ultraviolet-visible spectroscopy. The LSPR wavelength shifts caused by the variations in the quantity of methylene blue adsorbed on the Ag NDA were examined. The results of this study suggest that the Ag NDA prepared using NAM can be used as a chemical sensor platform. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：8
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