Detecting Nanoscale Size Dependence in VO2 Phase Transition Using a Split-Ring Resonator Metamaterial

被引：89

作者：

Appavoo, Kannatassen ^{[1
]}

Haglund, Richard F., Jr.

机构：

[1] Vanderbilt Univ, Inst Nanoscale Sci & Engn, Nashville, TN 37235 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 03期

基金：

美国国家科学基金会;

关键词：

Metamaterial; plasmonic sensor; phase transition; vanadium dioxide; size effects; METAL-INSULATOR-TRANSITION; 2ND-HARMONIC GENERATION; VANADIUM; SEMICONDUCTOR; NANOCRYSTALS; STRESS;

D O I：

10.1021/nl103842v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have measured the size dependence of a solid-solid phase transformation in discrete nanoscale volumes of vanadium dioxide (VO2) defined by splitring resonators. By monitoring the incoupling plasmonic mode while thermally cycling through the insulator-metal transition, we show that hysteresis width broadens with reduced interrogation volume (i.e., number of intrinsic nucleation sites). The results further imply a volume range over which both electronic and structural components of the switching exhibit similar size dependence.

引用

页码：1025 / 1031

页数：7

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