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Plasmon hybridization in complex met...

Hao, Feng.

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Plasmon hybridization in complex metallic nanostructures.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Plasmon hybridization in complex metallic nanostructures./
Author:	Hao, Feng.
Description:	120 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-09, Section: B, page: 5529.
Contained By:	Dissertation Abstracts International71-09B.
Subject:	Physics, Condensed Matter. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3421404
ISBN:	9781124203829

Plasmon hybridization in complex metallic nanostructures.
Hao, Feng.

Plasmon hybridization in complex metallic nanostructures. - 120 p.

Source: Dissertation Abstracts International, Volume: 71-09, Section: B, page: 5529.

Thesis (Ph.D.)--Rice University, 2010.

With Plasmon Hybridization (PH) and Finite-Difference Time-Domain (FDTD) method, we theoretically investigated the optical properties of some complex metallic nanostructures (coupled nanoparticle/wire, nanostars, nanorings and combined ring/disk nanocavity systems).

ISBN: 9781124203829Subjects--Topical Terms:

1018743
Physics, Condensed Matter.

Plasmon hybridization in complex metallic nanostructures.
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020 $a 9781124203829
035 $a (UMI)AAI3421404
035 $a AAI3421404
040 $a UMI $c UMI
100 1 $a Hao, Feng. $3 1675051
245 1 0 $a Plasmon hybridization in complex metallic nanostructures.
300 $a 120 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-09, Section: B, page: 5529.
500 $a Adviser: Peter Nordlander.
502 $a Thesis (Ph.D.)--Rice University, 2010.
520 $a With Plasmon Hybridization (PH) and Finite-Difference Time-Domain (FDTD) method, we theoretically investigated the optical properties of some complex metallic nanostructures (coupled nanoparticle/wire, nanostars, nanorings and combined ring/disk nanocavity systems).
520 $a We applied the analytical formulism of PH studying the plasmonic coupling of a spherical metallic nanoparticle and an infinite long cylindrical nanowire. The plasmon resonance of the coupled system is shown shifted in frequency, which highly depends on the polarization of incident light relative to the geometry of the structure. We also showed the nanoparticle serves as an efficient antenna coupling the electromagnetic radiation into the low-energy propagating wire plasmons.
520 $a We performed an experimental and theoretical analysis of the optical properties of gold nanorings with different sizes and cross sections. For light polarized parallel to the ring, the optical spectrum sensitively depends on the incident angle. When light incidence is normal to the ring, two dipolar resonance is observed. As the incident light is titled, some previously dark mulipolar plasmon resonances will be excited as a consequence of the retardation.
520 $a The concept of plasmon hybridization is combined with the power of brute-force numerical methods to understand the plasmonic properties of some very complicated nanostructures. We showed the plasmons of a gold nanostar are a result of hybridization of the plasmons of the core and the tips of the particle. The core serves as a nanoantenna, dramatically enhanced the optical spectrum and the field enhancement of the nanostar.
520 $a We also applied this method analyzing the plasmonic modes of a nanocavity structure composed of a nanodisk with a surrounding minoring. For the concentric combination, we showed the nature of the plasmon modes can be understood as the plasmon hybrization of an individual ring and disk. The interation results in a blueshifted and broadened superradiant antibonding resonance and a redshifted and narrowed subradiant bonding plasmon. The electric field enhancement of the subradiant mode is significantly larger compared with its parent plasmon modes. For the nonconcentric ring/disk nanocavity, we showed the symmetry breaking caused the coupling betweem different multipolar plamons which results in a tunable Fano resonance. We also show the subradiant and the Fano resonances could be particularly useful in the LSPR and SERS sensing applications.
520 $a In the thesis, we also presented an efficient dielectric function of gold and silver that is suitable for the FDTD simulations of the optical properties of various nanoparticles. The new dielectric function is able to account for the interband transition in gold and silver, and provides more precise calculations of the optical spectra compared to the Drude dielectric function that is normally used previously.
590 $a School code: 0187.
650 4 $a Physics, Condensed Matter. $3 1018743
650 4 $a Physics, Optics. $3 1018756
650 4 $a Physics, Theory. $3 1019422
690 $a 0611
690 $a 0752
690 $a 0753
710 2 $a Rice University. $3 960124
773 0 $t Dissertation Abstracts International $g 71-09B.
790 1 0 $a Nordlander, Peter, $e advisor
790 $a 0187
791 $a Ph.D.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3421404