EFFECT OF ALIGNMENT ON THE TEMPERATURE-RESISTANCE RESPONSE OF DIELECTROPHORETICALLY ASSEMBLED MULTIWALLED CARBON NANOTUBE FILMS

被引：1
|
作者：
Wijaya, I. Putu Mahendra [1 ]
Rodriguez, Isabel [1 ]
Mhaisalkar, S. G. [2 ]
机构：
[1] Agcy Sci Technol & Res, Inst Mat Res & Engn, 3 Res Links, Singapore 117602, Singapore
[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
来源：
INTERNATIONAL JOURNAL OF NANOSCIENCE | 2008年 / 7卷 / 4-5期
关键词：
Multiwalled carbon nanotubes; dielectrophoresis; temperature response;
D O I：
10.1142/S0219581X0800533X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The assembly of multiwalled carbon nanotube (MWCNT) films through dielectrophoresis is described and the electrical response of aligned and randomly oriented MWCNT films to temperature variations is evaluated. The resistance of the randomly oriented MWCNT films was found to decrease exponentially with temperature. The decrease was less marked when the films were annealed and kept dehydrated during the electrical measurements. Alignment of MWCNTs led to an apparent reduction in the electrical response of the films with temperature changes and a small measurement-to-measurement variability, suggesting that dielectrophoresis-aligned MWCNT films would be more reproducible detectors in applications exploiting CNT-mediated electronic sensing.
引用
收藏
页码：199 / 205
页数：7
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