Optical sensing based on localized surface plasmon resonance

Zhu, SL and Zhou, W (2010) Optical sensing based on localized surface plasmon resonance. Key Engineering Materials, 447-448 584-589. doi:10.4028/www.scientific.net/KEM.447-448.584

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Author Zhu, SL
Zhou, W
Title Optical sensing based on localized surface plasmon resonance
Journal name Key Engineering Materials   Check publisher's open access policy
ISSN 1013-9826
ISBN 9780878492565
Publication date 2010
Sub-type Article (original research)
DOI 10.4028/www.scientific.net/KEM.447-448.584
Volume 447-448
Start page 584
End page 589
Total pages 6
Place of publication Stafa-Zurich, Switzerland
Publisher Trans Tech Publications
Collection year 2011
Language eng
Formatted abstract
Localized surface plasmon resonance (LSPR)-based nano-biosensors are of great interest in various applications such as environmental protection, biotechnology, and food safety. It is well known that types of materials and shapes of the nanostructures have significant influence on the sensitivity and the resolution in nanobiosensor application field. The conventional nanostructure array used for nanobiosensor is fabricated by chemical method, so it is difficult to control the shape and the inter-particle space. Focused ion beam (FIB) can be used to produce any shapes with a very high level of regularity and reproducibility. This makes it possible to optimize the shape of nanostructures and the inter-particle distance to achieve the full potential application in nanobiosensor. Using focused ion beam (FIB) nanofabrication method, we have fabricated the regularly shaped hybrid Ag-Au nanostructures distributed on the surface of the glass substrate. Gold-coating was used to tuning the optical characteristics of the silver nanostructure array. Discrete dipole approximation (DDA) method was used to optimize geometrical parameters of the hybrid Ag-Au nanostructures. The design and experiment results show that the sensitivity and resolution have been improved considerably compared to the chemically synthesized nanostructures. The nano-biosensor demonstrates the potential applications in monitoring, detection and identiļ¬cation of biological agents, and characterization of intermolecular interactions.
© (2010) Trans Tech Publications, Switzerland
Keyword Focused ion beam
Localized surface plasmon resonance
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ
Additional Notes Special issue: "Advances in Precision Engineering: ICoPE2010 and 13th ICPE International Conference on Precision Engineering".

Document type: Journal Article
Sub-type: Article (original research)
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Created: Fri, 11 Mar 2011, 09:48:31 EST by Dr Shaoli Zhu on behalf of !NON-HERDC