Investigation on localized surface plasmon resonance of different nano-particles for bio-sensor applications

Mortazavi, D., Kouzani, A. Z. and Matekovits, L. 2012, Investigation on localized surface plasmon resonance of different nano-particles for bio-sensor applications, in ICEAA 2012 : Proceedings of the 14th International Conference on Electromagnetics in Advanced applications, IEEE, Piscataway, N.J., pp. 865-868.

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Title Investigation on localized surface plasmon resonance of different nano-particles for bio-sensor applications
Author(s) Mortazavi, D.
Kouzani, A. Z.
Matekovits, L.
Conference name Electromagnetics in Advanced Applications. Conference (14th : 2012 : Cape Town, South Africa)
Conference location Cape Town, South Africa
Conference dates 2-7 Sep. 2012
Title of proceedings ICEAA 2012 : Proceedings of the 14th International Conference on Electromagnetics in Advanced applications
Editor(s) [Unknown]
Publication date 2012
Conference series Electromagnetics in Advanced Applications Conference
Start page 865
End page 868
Total pages 4
Publisher IEEE
Place of publication Piscataway, N.J.
Keyword(s) electric fields
plasmons
scattering
shape
silver
surface impedance
surface waves
Summary This paper proposes a novel sinusoidal shape nano-particle employed in localized surface plasmon resonance (LSPR) devices. Numerical modeling demonstrates advantages offered by the proposed nano-sinusoid on LSPR enhancement against other nano-particles including noble nano-triangles and nano-diamonds. Although nano-triangles exhibit high concentration of the electric field near their tips, when illuminated with a light polarized along the tip axis, they present only one hot spot at the vertex along the polarization direction. To create a structure with two hot spots, which is desired in bio-sensing applications, two nano-triangles can be put back-to-back. Therefore, a nano-diamond particle is obtained which exhibits two hot spots and presents higher enhancements than nano-triangles for the same resonant wavelength. The main drawback of the nano-diamonds is the fluctuation in their physical size-plasmon spectrum relationships, due to a high level of singularity as the result for their four sharp tip points. The proposed nano-sinusoid overcomes this disadvantage while maintaining the benefits of having two hot spots and high enhancements.
ISBN 1467303348
9781467303347
Language eng
Field of Research 090606 Photonics and Electro-Optical Engineering (excl Communications)
Socio Economic Objective 861502 Medical Instruments
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2012, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051051

Document type: Conference Paper
Collection: School of Engineering
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