摘要
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.
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.
基金
supported by the National Natural Science Foundation of China(Grant Nos.51005230,61375091,51375477)
the CAS FEA International Partnership Program for Creative Research Team
