mortazavi-evolutiontowardsanew-2012.pdf (359.85 kB)
Evolution towards a new LSPR particle : Nano-sinusoid
journal contribution
posted on 2012-01-01, 00:00 authored by Daryoush Mortazavi, Abbas KouzaniAbbas Kouzani, L MatekovitsThis paper proposes a novel nano-sinusoid particle to be employed in enhanced localized surface plasmon resonance (LSPR) bio-sensing devices. Numerical investigations are carried out to demonstrate advantages offered by the proposed nano-particle on LSPR enhancement over 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
Journal
Progress in electromagnetics researchVolume
132Pagination
199 - 213Publisher
Electromagnetics AcademyLocation
Cambridge, MAISSN
1070-4698eISSN
1559-8985Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2012, The AuthorsUsage metrics
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