Fabrication and characterization of rhombic silver nanoparticles for biosensing

Zhu, Shaoli, Du, Chunlei and Fu, Yongqi (2009) Fabrication and characterization of rhombic silver nanoparticles for biosensing. Optical materials, 31 6: 769-774. doi:10.1016/j.optmat.2008.07.014

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Author Zhu, Shaoli
Du, Chunlei
Fu, Yongqi
Title Fabrication and characterization of rhombic silver nanoparticles for biosensing
Journal name Optical materials   Check publisher's open access policy
ISSN 0925-3467
Publication date 2009-04
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.optmat.2008.07.014
Open Access Status File (Author Post-print)
Volume 31
Issue 6
Start page 769
End page 774
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract Fabrication and characterization of rhombic silver nanoparticles array being used as a localized surface plasmon resonance (LSPR)-based nano-biosensor were reported in this paper. The sensor consists of a rhombic Ag nanoparticles array with single particle dimension of ∼140 nm in-plane width and 47 nm out-of-plane height. Characteristics of the nanoparticles such as extinction spectroscopy properties, refractive index sensitivity, and concentration of the target molecules were analyzed. The LSPR-based extinction spectra of the antigen or antibody with lower concentration were detected. The detection results from 100 nM target molecule indicate a larger peak wavelength shift for the rhombic nanoparticles-based nano-biosensor than that of the reported triangular particles-based biosensor. Using a discrete dipole approximation (DDA) algorithm aided design approach we demonstrated that the refractive index sensitivity is 330 nm per refractive index unit for the fabricated rhombic Ag nanoparticles array. © 2008 Elsevier B.V. All rights reserved.
Keyword DDA
Rhombic Ag nanoparticles array
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown
Additional Notes Available online 14 September 2008

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
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Citation counts: TR Web of Science Citation Count  Cited 34 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 35 times in Scopus Article | Citations
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Created: Fri, 11 Mar 2011, 13:04:25 EST by Dr Shaoli Zhu on behalf of Aust Institute for Bioengineering & Nanotechnology