Suspended Single-Wall Carbon Nanotubes as a Sensor of Molecular Adsorption

被引：0

作者：

Homma, Yoshikazu ^{[1
]}

Hanashima, Tateki ^{[1
]}

Chiashi, Shohei ^{[2
]}

机构：

[1] Tokyo Univ Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan

[2] Univ Tokyo, Dept Mech Engn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

SENSORS AND MATERIALS | 2009年 / 21卷 / 07期

关键词：

carbon nanotubes; photoluminescence; environmental effect; adsorption; desorption; OPTICAL-TRANSITION ENERGIES; DEPENDENCE;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

All the carbon atoms of a single-wall carbon nanotube (SWNT) are ill the surface layer. Thus, SWNTs suffer from strong interaction with the surrounding environment. When an SWNT is suspended between mesa structures, the interactions with the substrate and other nanotubes are minimized, and the nanotube is directly exposed to ambient gas. Semiconducting SWNTs suspended in space exhibit intense photoluminescence, and their optical transition energy depends on the state Of molecules absorbed onto the SWNT surface. Therefore, gas molecule adsorption/desorption can be probed by photoluminescence analysis.

引用

页码：331 / 338

页数：8

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