Investigation on localized surface plasmon resonance of different nano-particles for bio-sensor applications
Contribuinte(s) |
[Unknown] |
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Data(s) |
01/01/2012
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Resumo |
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. |
Identificador | |
Idioma(s) |
eng |
Publicador |
IEEE |
Relação |
http://dro.deakin.edu.au/eserv/DU:30051051/evid-investigation-peerreviewspcf-2012.pdf http://dro.deakin.edu.au/eserv/DU:30051051/mortazavi-investigationonlocalized-2012.pdf http://dx.doi.org/10.1109/ICEAA.2012.6328756 |
Direitos |
2012, IEEE |
Palavras-Chave | #electric fields #plasmons #scattering #shape #silver #surface impedance #surface waves |
Tipo |
Conference Paper |