Structural and optical properties of gold nanosphericals in variation of growth time using seed mediated growth method

Nor Salihah Mohamed Ali, Farah Nur Diyana Ibrahim, Marlia Morsin, Muhamad Mat Salleh, Nur Anida Jumadi, Marriatyi Morsin

Research output: Contribution to journalArticle

Abstract

Nanogold is a type of metallic nanostructures and it is very sensitive to the dielectric environment of the materials due to strong dependency of plasmon on shapes and sizes. The unique properties of gold nanostructures can be implemented as sensing material in Localized Surface Plasmon Resonance (LSPR) sensor. This paper reports an experimental study on growth time effect towards structural and optical properties of gold nanosphericals (AuNSs). The gold nanoplates have been grown on a substrate using seed mediated growth method (SMGM). In this study, the growth time was varied from 30 minutes to seven hours. The largest size of AuNSs is 82.67 nm obtained from 7 hours growth time sample. XRD analysis shows a peak of the diffraction angle occurs at the plane (111) in position 38.19°. The optical absorption spectra of all samples show resonance peaks in the range of 530 nm to 560 nm, which are corresponding to the transverse surface plasmon resonance (t-SPR). Thus, in this study, it was found that the growth time affected the growth of the gold nanostructures with optimum growth time of seven hours. Longer growth time resulted in the larger size of AuNSs and therefore, it is not very suitable to be used in LSPR sensing application.

Original languageEnglish
Pages (from-to)67-71
Number of pages5
JournalJournal of Telecommunication, Electronic and Computer Engineering
Volume9
Issue number3-8
Publication statusPublished - 1 Jan 2017

Fingerprint

Seed
Structural properties
Optical properties
Gold
Surface plasmon resonance
Nanostructures
Light absorption
Absorption spectra
Diffraction
Sensors
Substrates

Keywords

  • Gold nanoparticles
  • Localized surface plasmon resonance
  • Plasmonic sensor
  • Seed mediated growth method (SMGM)
  • Seeding time

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Structural and optical properties of gold nanosphericals in variation of growth time using seed mediated growth method. / Ali, Nor Salihah Mohamed; Ibrahim, Farah Nur Diyana; Morsin, Marlia; Mat Salleh, Muhamad; Jumadi, Nur Anida; Morsin, Marriatyi.

In: Journal of Telecommunication, Electronic and Computer Engineering, Vol. 9, No. 3-8, 01.01.2017, p. 67-71.

Research output: Contribution to journalArticle

Ali, Nor Salihah Mohamed ; Ibrahim, Farah Nur Diyana ; Morsin, Marlia ; Mat Salleh, Muhamad ; Jumadi, Nur Anida ; Morsin, Marriatyi. / Structural and optical properties of gold nanosphericals in variation of growth time using seed mediated growth method. In: Journal of Telecommunication, Electronic and Computer Engineering. 2017 ; Vol. 9, No. 3-8. pp. 67-71.
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