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Investigation on localized surface plasmon resonance of different nano-particles for bio-sensor applications
conference contribution
posted on 2012-01-01, 00:00 authored by Daryoush Mortazavi, Abbas KouzaniAbbas Kouzani, L MatekovitsThis 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.
History
Event
Electromagnetics in Advanced Applications. Conference (14th : 2012 : Cape Town, South Africa)Pagination
865 - 868Publisher
IEEELocation
Cape Town, South AfricaPlace of publication
Piscataway, N.J.Publisher DOI
Start date
2012-09-02End date
2012-09-07ISBN-13
9781467303347ISBN-10
1467303348Language
engPublication classification
E1 Full written paper - refereedCopyright notice
2012, IEEETitle of proceedings
ICEAA 2012 : Proceedings of the 14th International Conference on Electromagnetics in Advanced applicationsUsage metrics
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