Oxygen desorption from single-walled carbon nanotubes by camera flash.
In this paper, we report that the electrical conductance of single-walled carbon nanotubes networks decreases when the nanotubes are illuminated by camera flash in high vacuum up to 10(-6) Torr. The decreasing conductance shows step-like characteristics at each illumination. The magnitude of conductance change step reduces gradually after each illumination; finally, the conductance reaches saturation. Controlled experiments in air, oxygen and nitrogen gas indicate that mechanism for these observations is photodesorption of molecular oxygen from singled-walled carbon nanotubes.
National Center for Nanoscience and Technology of China, Beijing 100080, China.
Zheng
Z
Liu
Guangtong
G
Liu
Yuanchun
Y
Zhao
Kaihong
K
Zheng
Haibo
H
Huang
Yanlian
Y
Yang
Chen
C
Wang
Changzhi
C
Gu
Sishen
S
Xie
Lianfeng
L
Sun