Next Article in Journal
Adaptive Interference Cancellation of ECG Signals
Previous Article in Journal
Erratum: Kim, K.-P.; Singh, A.K.; Bai, X.; Leprun, L.; Bhunia, A.K. Novel PCR Assays Complement Laser Biosensor-Based Method and Facilitate Listeria Species Detection from Food. Sensors 2015, 15, 22672–22691
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(5), 947; doi:10.3390/s17050947

Gold Nanoplates for a Localized Surface Plasmon Resonance-Based Boric Acid Sensor

1
Microelectronics & Nanotechnology-Shamsuddin Research Centre (MiNT-SRC), Institute of Integrated Engineering (I2E), Universiti Tun Hussien Onn Malaysia, Batu Pahat, Johor 86400, Malaysia
2
Department of Electronic Engineering, Faculty of Electronic and Electrical Engineering, Universiti Tun Hussien Onn Malaysia, Batu Pahat, Johor 86400, Malaysia
3
Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editor: Alexander Star
Received: 28 February 2017 / Revised: 6 April 2017 / Accepted: 19 April 2017 / Published: 25 April 2017
(This article belongs to the Section Biosensors)
View Full-Text   |   Download PDF [1610 KB, uploaded 25 April 2017]   |  

Abstract

Localized surface plasmon resonance (LSPR) properties of metallic nanostructures, such as gold, are very sensitive to the dielectric environment of the material, which can simply be adjusted by changing its shape and size through modification of the synthesizing process. Thus, these unique properties are very promising, particularly for the detection of various types of chemicals, for example boric acid which is a non-permitted preservative employed in food preparations. For the sensing material, gold (Au) nanoplates with a variety of shapes, i.e., triangular, hexagonal, truncated pentagon and flat rod, were prepared using a seed-mediated growth method. The yield of Au nanoplates was estimated to be ca. 63% over all areas of the sensing material. The nanoplates produced two absorption bands, i.e., the transverse surface plasmon resonance (t-SPR) and the longitudinal surface plasmon resonance (l-SPR) at 545 nm and 710 nm, respectively. In the sensing study, these two bands were used to examine the response of gold nanoplates to the presence of boric acid in an aqueous environment. In a typical process, when the sample is immersed into an aqueous solution containing boric acid, these two bands may change their intensity and peak centers as a result of the interaction between the boric acid and the gold nanoplates. The changes in the intensities and peak positions of t-SPR and l-SPR linearly correlated with the change in the boric acid concentration in the solution. View Full-Text
Keywords: localized surface plasmon resonance; plasmonic sensor; gold nanoparticles; gold nanoplates; boric acid localized surface plasmon resonance; plasmonic sensor; gold nanoparticles; gold nanoplates; boric acid
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Morsin, M.; Mat Salleh, M.; Ali Umar, A.; Sahdan, M.Z. Gold Nanoplates for a Localized Surface Plasmon Resonance-Based Boric Acid Sensor. Sensors 2017, 17, 947.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top