Polarization behaviors of twisted carbon nanotube fibers

被引：22
|
作者：
Zhou, Jinyuan [1 ,3 ]
Sun, Gengzhi [1 ]
Zhan, Zhaoyao [1 ]
An, Jianing [1 ]
Zhang, Yongzhe [2 ]
Zhang, Yani [1 ]
Zheng, Lianxi [1 ]
机构：
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[3] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
来源：
JOURNAL OF RAMAN SPECTROSCOPY | 2012年 / 43卷 / 09期
关键词：
carbon nanotube fiber; surface twisting angle; polarized Raman; alignment; depth profile; RAMAN-SPECTROSCOPY; YARNS; SCATTERING; ARRAYS; FILMS;
D O I：
10.1002/jrs.4044
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Polarization behaviors of carbon nanotube (CNT) fibers with different twisting were reported. Scanning electron microscope and polarized Raman spectroscopy were used to investigate the prepared samples. Results indicate that surface twisting angle affects greatly the polarization angle and I-///I-perpendicular to ratio of twisted CNT fibers. Raman depth profile measurements imply that the twisted fibers consist of non-uniform CNT alignments. A simplified two-CNT-alignment geometric model was proposed to illuminate the experimental observations. The results suggest that polarized Raman depth profile measurement would be a very useful approach for determining the distribution of CNT alignments in CNT fibers. Copyright (C) 2012 John Wiley & Sons, Ltd.
引用
收藏
页码：1221 / 1226
页数：6
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