The preparation of a plasmonically resonant VO2 thermochromic pigment

被引：21

作者：

Bai, Huaping ^{[1
,2
]}

Cortie, Michael B. ^{[1
]}

Maaroof, Abbas I. ^{[1
]}

Dowd, Annette ^{[1
]}

Kealley, Catherine ^{[1
]}

Smith, Geoffrey B. ^{[1
]}

机构：

[1] Univ Technol Sydney, Inst Nanoscale Technol, Broadway, NSW 2007, Australia

[2] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Peoples R China

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 08期

关键词：

METAL-INSULATOR-TRANSITION; VANADIUM DIOXIDE; OPTICAL-PROPERTIES; PHASE-TRANSITION; RUTILE VO2; SCATTERING; BEHAVIOR; OXIDES;

D O I：

10.1088/0957-4484/20/8/085607

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Vanadium dioxide (VO2) undergoes a reversible metal-insulator transition, normally at similar to 68 degrees C. While the properties of continuous semi-transparent coatings of VO2 are well known, there is far less information available concerning the potential use of discrete VO2 nanoparticles as a thermochromic pigment in opaque coatings. Individual VO2 nanoparticles undergo a localized plasmon resonance with near-infrared light at about 1100 nm and this resonance can be switched on and off by simply varying the temperature of the system. Therefore, incorporation of VO2 nanoparticles into a coating system imbues the coating with the ability to self-adaptively modulate its own absorptive efficiency in the near-infrared. Here we examine the magnitude and control of this phenomenon. Prototype coatings are described, made using VO2 powder produced by an improved process. The materials are characterized using calorimetry, x-ray diffraction, high-resolution scanning electron microscopy, transmission electron microscopy, and by measurement of optical properties.

引用

页数：9

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