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A resonance tunable and durable LSPR nano-particle sensor : AL2O3 capped silver nano-disks

Mortazavi, D., Kouzani, A. Z. and Vernon, K. C. 2012, A resonance tunable and durable LSPR nano-particle sensor : AL2O3 capped silver nano-disks, Progress in electromagnetics research, vol. 130, pp. 429-446.

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Title A resonance tunable and durable LSPR nano-particle sensor : AL2O3 capped silver nano-disks
Formatted title A resonance tunable and durable LSPR nano-particle sensor : AL2O3 capped silver nano-disks
Author(s) Mortazavi, D.
Kouzani, A. Z.
Vernon, K. C.
Journal name Progress in electromagnetics research
Volume number 130
Start page 429
End page 446
Total pages 18
Publisher Electromagnetics Academy
Place of publication Cambridge, MA
Publication date 2012
ISSN 1070-4698
1559-8985
Keyword(s) Localized surface plasmon resonance (LSPR)
LSPR
biosensors
biomolecules
alumina (AL2O3) capped silver nano-disks
resonance frequency
oxidation
high temperature
Summary Localized surface plasmon resonance (LSPR) biosensors are employed to detect target biomolecules which have particular resonance wavelengths. Accordingly, tunability of the LSPR wavelength is essential in designing LSPR devices. LSPR devices employing silver nano-particles present better efficiencies than those using other noble metals such as gold; however, silver nano-particles are easily oxidized when they come in contact with liquids, which is inevitable in biosensing applications. To attain both durability and tunabilty in a LSPR biosensor, this paper proposes alumina (AL2O3) capped silver nano-disks. It is shown that through controlling the thickness of the cap, the LSPR resonance frequency can be finely tuned over a wide range; and moreover, the cap protects silver nano-particles from oxidation and high temperature.
Language eng
Field of Research 090606 Photonics and Electro-Optical Engineering (excl Communications)
Socio Economic Objective 861502 Medical Instruments
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049708

Document type: Journal Article
Collections: School of Engineering
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