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- Title
EVOLUTION TOWARDS A NEW LSPR PARTICLE: NANO-SINUSOID.
- Authors
Mortazavi, D.; Kouzani, A. Z.; Matekovits, L.
- Abstract
This 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 of their four sharp tip points. The proposed nano-sinusoid overcomes this disadvantage while maintaining the benefits of having two hot spots and high enhancements.
- Subjects
NANOPARTICLES; SURFACE plasmon resonance; BIOSENSORS; TRIANGLES; DIAMONDS; ELECTRIC fields
- Publication
Progress in Electromagnetics Research, 2012, Vol 132, p199
- ISSN
1070-4698
- Publication type
Article
- DOI
10.2528/pier12081101