Plasmonic nanoparticle heterodimers in a semiembedded geometry fabricated by stepwise upright assembly

被引:42
作者
Wang, Hui
Halas, Naomi J.
机构
[1] Rice Univ, Dept Chem, Dept Elect & Comp Engn, Houston, TX 77005 USA
[2] Rice Univ, Lab Nanophoton, Houston, TX 77005 USA
关键词
D O I
10.1021/nl062346z
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report the experimental realization of plasmonic heterodimers, pairs of directly adjacent, interacting metallic nanoparticles. A novel fabrication and positioning approach is utilized for the stepwise assembly of upright nanoparticle pairs, where the first nanoparticle is almost entirely embedded in an elastomeric dielectric medium prior to attachment of the second nanoparticle. The plasmon energies of the embedded nanoparticles are red-shifted, and the strongly anisotropic dielectric environment of the semiembedded nanoparticle pairs effectively transforms the structures into plasmonic heterodimers. The asymmetric hybridization of the plasmon modes of differing energies on the constituent nanoparticles of the heterodimer is clearly observed.
引用
收藏
页码:2945 / 2948
页数:4
相关论文
共 35 条
[1]   THE INTERACTION BETWEEN ELECTROMAGNETIC RESONANCES AND ITS ROLE IN SPECTROSCOPIC STUDIES OF MOLECULES ADSORBED ON COLLOIDAL PARTICLES OR METAL SPHERES [J].
ARAVIND, PK ;
NITZAN, A ;
METIU, H .
SURFACE SCIENCE, 1981, 110 (01) :189-204
[2]   Strongly interacting plasmon nanoparticle pairs: From dipole-dipole interaction to conductively coupled regime [J].
Atay, T ;
Song, JH ;
Nurmikko, AV .
NANO LETTERS, 2004, 4 (09) :1627-1631
[3]   Surface plasmon subwavelength optics [J].
Barnes, WL ;
Dereux, A ;
Ebbesen, TW .
NATURE, 2003, 424 (6950) :824-830
[4]   Plasmon hybridization in nanoshell dimers [J].
Brandl, DW ;
Oubre, C ;
Nordlander, P .
JOURNAL OF CHEMICAL PHYSICS, 2005, 123 (02)
[5]   Extraordinary optical transmission through sub-wavelength hole arrays [J].
Ebbesen, TW ;
Lezec, HJ ;
Ghaemi, HF ;
Thio, T ;
Wolff, PA .
NATURE, 1998, 391 (6668) :667-669
[6]   Confined plasmons in nanofabricated single silver particle pairs:: Experimental observations of strong interparticle interactions [J].
Gunnarsson, L ;
Rindzevicius, T ;
Prikulis, J ;
Kasemo, B ;
Käll, M ;
Zou, SL ;
Schatz, GC .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (03) :1079-1087
[7]   Electromagnetic fields around silver nanoparticles and dimers [J].
Hao, E ;
Schatz, GC .
JOURNAL OF CHEMICAL PHYSICS, 2004, 120 (01) :357-366
[8]   Plasmons in the metallic nanoparticle -: Film system as a tunable impurity problem [J].
Le, F ;
Lwin, NZ ;
Steele, JM ;
Käll, M ;
Halas, NJ ;
Nordlander, P .
NANO LETTERS, 2005, 5 (10) :2009-2013
[9]   Plasmonics: Localization and guiding of electromagnetic energy in metal/dielectric structures [J].
Maier, SA ;
Atwater, HA .
JOURNAL OF APPLIED PHYSICS, 2005, 98 (01)
[10]  
Maier SA, 2001, ADV MATER, V13, P1501, DOI 10.1002/1521-4095(200110)13:19<1501::AID-ADMA1501>3.0.CO