Nanosphere-in-a-Nanoshell: A Simple Nanomatryushka

被引：210

作者：

Bardhan, Rizia ^{[1
,2
]}

Mukherjee, Shaunak ^{[1
,2
]}

Mirin, Nikolay A. ^{[1
,2
]}

Levit, Stephen D. ^{[2
]}

Nordlander, Peter ^{[2
,3
,4
]}

Halas, Naomi J. ^{[1
,2
,3
,4
,5
]}

机构：

[1] Rice Univ, Dept Chem, Houston, TX 77005 USA

[2] Rice Univ, Lab Nanophoton, Houston, TX 77005 USA

[3] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77005 USA

[4] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[5] Rice Univ, Dept Bioengn, Houston, TX 77005 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 16期

关键词：

PHOTOTHERMAL CANCER-THERAPY; FLUORESCENCE ENHANCEMENT; MULTILAYER NANOSHELLS; NANOSTRUCTURES; NANOPARTICLES; RESONANCES; TUMORS; DNA;

D O I：

10.1021/jp9095387

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spherically concentric nanoparticles, composed of a silica-coated gold nanosphere surrounded by a gold shell layer, possess highly geometrically tunable optical resonances in a compact, sub-100 nm size range. The plasmon modes of this nanostructure, a rudimentary "nanomatryushka", arise from the hybridization of nanosphere plasmons with the bonding and antibonding modes of the surrounding Au shell. Here, Au/SiO2/nanoshells are fabricated in sub-100 nm and sub-150 nm size ranges. Changing the internal geometry of the nanoparticle not only shifts its resonance frequencies, but can also strongly modify the relative magnitudes of the absorption and scattering cross sections, independent of nanoparticle size.

引用

页码：7378 / 7383

页数：6

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