Photothermal Enhancement in Core-Shell Structured Plasmonic Nanoparticles

被引：42

作者：

Li, Qiang ^{[1
]}

Zhang, Weichun ^{[1
]}

Zhao, Ding ^{[1
]}

Qiu, Min ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Dept Opt Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Royal Inst Technol, Sch Informat & Commun Technol, S-16440 Kista, Sweden

来源：

PLASMONICS | 2014年 / 9卷 / 03期

基金：

中国国家自然科学基金; 瑞典研究理事会;

关键词：

Plasmonics; Core-shell nanoparticle; Photothermal effect; FILMS; NANOSTRUCTURES; NANOSHELLS; SILICON;

D O I：

10.1007/s11468-014-9673-8

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：

Plasmonic nanoparticles (NPs) with photothermal effects can be exploited as efficient heat sources in various applications. Here, the photothermal properties in core-shell structured plasmonic NPs, including metal/silica NP, silica/metal NP, and metal/silica/metal NP, are investigated. Compared with bare metal NPs, the core-shell plasmonic NPs not only exhibit extremely agile tunability in the surface plasmon resonances but also show considerably enhanced photothermal effects in terms of the maximum temperature rise. For metal/silica NPs and metal/silica/metal NPs, the SiO2 shells function as effective thermal-protective layers for enhanced photothermal effect. For silica/metal NPs, the SiO2 core and the metal shell show uniform temperature rise. These findings are essential for applying the core-shell structured plasmonic NPs on photothermal imaging, nanofluidics, etc.

引用

页码：623 / 630

页数：8

共 22 条

[1] Linear optical properties of gold nanoshells [J].