The effect of nitric acid and Hexadecyltrimethylammonium Bromide (CTAB) concentration on the morphology and plasmonic properties of gold nanorods

Metal nanoparticles have unique optical properties called Localized Surface Plasmon Resonance (LSPR). Gold nanorods have better plasmonic property for sensor application due to its longitudinal resonance mode is more sensitive to environment dielectric properties changes. Controlling the aspect rati...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 817; no. 1; pp. 12009 - 12014
Main Authors Fauzia, V, Permana, H E
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 10.04.2017
Subjects
Aspect ratio
Cetyltrimethylammonium bromide
Dielectric properties
Gold
Morphology
Nanoparticles
Nanorods
Nitric acid
Optical properties
Physics
Plasmonics
Surface plasmon resonance
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Summary:Metal nanoparticles have unique optical properties called Localized Surface Plasmon Resonance (LSPR). Gold nanorods have better plasmonic property for sensor application due to its longitudinal resonance mode is more sensitive to environment dielectric properties changes. Controlling the aspect ratio during the synthesis process becomes important because it would determine the plasmonic properties of the gold nanorods. In this study, gold nanorods have been successfully synthesized in the solution with three different concentrations of HNO3 and CTAB. Increasing the concentration of HNO3 and CTAB tends to increase the length, diameter, aspect ratio and yield of gold nanorods. All samples appeared to have a peak of transversal mode at the wavelength of 510 nm. However, the longitudinal mode peaks could not be seen in this observation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/817/1/012009