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Rare SWCNT materials contain both metallic SWCNT(m-SWCNT)and semi-conducting SWCNT(s-SWCNT).Since mSWCNT 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 2 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.
SWCNTs and s-SWCNTs have very different applications, it is necessary to differentiate them so as to further separate them for more efficient CNTs (m-SWCNTs) and semi-conducting SWCNTs (s-SWCNTs) 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 2 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. of the detection system.