Real-time plasmon resonance tuning of liquid Ga nanoparticles by in situ spectroscopic ellipsometry

被引：83

作者：

Wu, Pae C. ^{[1
]}

Kim, Tong-Ho

Brown, April S.

Losurdo, Maria

Bruno, Giovanni

Everitt, Henry O.

机构：

[1] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

[2] CNR, Inst Inorgan Methodol & Plasmas, I-70126 Bari, Italy

[3] INSTM, I-70126 Bari, Italy

[4] Duke Univ, Dept Phys, Durham, NC 27708 USA

[5] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2712508

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Liquid Ga nanoparticles have been deposited on sapphire substrates at room temperature. The optical evolution of Ga nanoparticle surface plasmon resonance during deposition has been characterized by in situ real-time spectroscopic ellipsometry to control and tune the plasmon resonance photon energy. The existence of both longitudinal and transverse modes for spheroidal Ga nanoparticles supported on a sapphire substrate is demonstrated and the dependence of the longitudinal and transverse plasmon energies on particle size is discussed. Stability of the Ga surface plasmon resonance to air exposure and high temperature is also demonstrated. (c) 2007 American Institute of Physics.

引用

页数：3