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

Mi Jung; Myung-Gi Ji; Tae-Ryong Kim; Cheol-Hwee Shim; Seok Lee; Deokha Woo; Young-Wan Choi

doi:10.1117/1.OE.55.8.087107

19 August 2016 Localized surface plasmon resonance in two-dimensional silver nanodot array fabricated using nanoporous alumina mask for chemical sensor platform

Mi Jung, Myung-Gi Ji, Tae-Ryong Kim, Cheol-Hwee Shim, Seok Lee, Deokha Woo, Young-Wan Choi

Author Affiliations +

Optical Engineering, Vol. 55, Issue 8, 087107 (August 2016). https://doi.org/10.1117/1.OE.55.8.087107

Abstract

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 ∼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.

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Mi Jung, Myung-Gi Ji, Tae-Ryong Kim, Cheol-Hwee Shim, Seok Lee, Deokha Woo, and Young-Wan Choi "Localized surface plasmon resonance in two-dimensional silver nanodot array fabricated using nanoporous alumina mask for chemical sensor platform," Optical Engineering 55(8), 087107 (19 August 2016). https://doi.org/10.1117/1.OE.55.8.087107

Published: 19 August 2016

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