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Localized surface plasmon resonance sensor of gold nanoplates for detection of boric acid

Morsin, Marlia and Mat Salleh, Muhamad and Ali Umar, Akrajas and Yahaya, Muhammad (2014) Localized surface plasmon resonance sensor of gold nanoplates for detection of boric acid. Key Engineering Materials, 605. pp. 356-359. ISSN 16629795

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Abstract

Localized surface plasmon resonance (LSPR) peak wavelength of nanostructures metallic materials, such as gold and silver, is very sensitive to the dielectric environment of the materials; hence widely used as sensors to detect various types of chemicals. In this study, high - yield gold nanoplates ca. 63% have been grown on the quartz substrate using the seed - mediated growth method. The grown gold nanoplates exhibit variety of shapes such as triangular, hexagonal, truncated hexagonal and flat rod. The LSPR spectrum of Au nanoplates sample has two absorption bands; centring at 543 nm and 710 nm, which are associated with transverse SPR (t-SPR) and longitudinal SPR (l-SPR) respectively. The intensities and peaks position of these two bands were found to linearly change with the concentration of boric acid solutions.

Item Type: Article
Uncontrolled Keywords: Localized surface plasmon resonance (LSPR); optical sensor; gold nanoplates; boric acid
Subjects: Q Science > QC Physics
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:36
Last Modified: 13 Aug 2018 03:36
URI: http://eprints.uthm.edu.my/id/eprint/8762
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