Detecting the electrical conductivity of single walled carbon nano-tubes by a DFM detection system

Rare SWCNT materials contain both metallic SWCNT （m-SWCNT） and semi-conducting SWCNT（s-SWCNT）. Since m- SWCNT and s-SWCNT have very different applications, it is necessary to differentiate them so as to further separate them for more efficient CNT utilization. To achieve this goal, the authors estab...

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Published in:Science China. Technological sciences 2014, Vol.57 (1), p.49-54
Main Authors: Zhao, ZengXu, Tian, XiaoJun, Liu, Jie, Dong, ZaiLi, Wang, YueChao
Format: Article
Language:English
Subjects:
Carbon
China
DFM
Dielectrics
Electrical resistivity
Engineering
Resistivity
Semiconductors
Single wall carbon nanotubes
Statistics
交流电场
单壁碳纳米管
探测
检测系统
电导率
碳纳米管材料
统计分析
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cited_by cdi_FETCH-LOGICAL-c380t-25121d535066e3c3f5056155bb14eb3dc36350da45d09d53f267aadbbab5c8d33
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container_issue 1
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container_title Science China. Technological sciences
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creator Zhao, ZengXu
Tian, XiaoJun
Liu, Jie
Dong, ZaiLi
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description Rare SWCNT materials contain both metallic SWCNT （m-SWCNT） and semi-conducting SWCNT（s-SWCNT）. Since m- SWCNT and s-SWCNT have very different applications, it is necessary to differentiate them so as to further separate them for more efficient CNT utilization. To achieve this goal, the authors established a dielectric force microscope （DFM） detection system to differentiate s-SWCNT from m-SWCNT, based on different 2c~ force decided by SWCNT＇s conductivity under AC electric field. The experimental results showed that s-SWCNT can be clearly differentiated from m-SWCNT. The statistics analysis shows that the detected number proportion of s-SWCNT to m-SWCNT matches the well-known proportion 2：1 in the normally prepared CNT materials. The above results strongly verified the effectiveness of the detection system.
doi_str_mv 10.1007/s11431-013-5412-1
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source Springer Nature
subjects Carbon
China
DFM
Dielectrics
Electrical resistivity
Engineering
Resistivity
Semiconductors
Single wall carbon nanotubes
Statistics
交流电场
单壁碳纳米管
探测
检测系统
电导率
碳纳米管材料
统计分析
title Detecting the electrical conductivity of single walled carbon nano-tubes by a DFM detection system
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