Single-Walled Carbon Nanotubes Acting as Controllable Transport Channels
HUANG Bo-Da1 , XIA Yue-Yuan2 , ZHAO Ming-Wen2 , LI Feng2 , LIU Xiang-Dong2 , JI Yan-Ju2 , SONG Chen2 , TAN Zhen-Yu3 , LIU Hui4
1 School of Information Science and Engineering, Shandong University, Jinan Shandong 250100
2 School of Physics and Microelectronics, Shandong University, Jinan 250100
3 School of Electrical Engineering, Shandong University, Jinan 250100
4 High Performance Computing Centre, Shandong University, Jinan 250100
Single-Walled Carbon Nanotubes Acting as Controllable Transport Channels
HUANG Bo-Da1 ;XIA Yue-Yuan2 ;ZHAO Ming-Wen2 ;LI Feng2 ;LIU Xiang-Dong2 ;JI Yan-Ju2 ;SONG Chen2 ;TAN Zhen-Yu3 ;LIU Hui4
1 School of Information Science and Engineering, Shandong University, Jinan Shandong 250100
2 School of Physics and Microelectronics, Shandong University, Jinan 250100
3 School of Electrical Engineering, Shandong University, Jinan 250100
4 High Performance Computing Centre, Shandong University, Jinan 250100
关键词 ：
31.15.Qg ,
78.67.Ch ,
68.43.Hn
Abstract ： The motion and equilibrium distribution of water molecules adsorbed inside neutral and negatively charged single-walled carbon nanotubes (SWNTs) have been studied using molecular dynamics simulations (MDSs) at room temperature based on CHARMM (Chemistry at HARvard Molecular Mechanics) potential parameters. We find that water molecules have a conspicuous electropism phenomenon and regular tubule patterns inside and outside the charged tube wall. The analyses of the motion behaviour of water molecules in the radial and axial directions show that by charging the SWNT, the adsorption efficiency is greatly enhanced, and the electric field produced by the charged SWNTs prevents water molecules from flowing out of the nanotube. However, water molecules can travel through the neutral SWNT in a fluctuating manner. This indicates that by electrically charging and uncharging the SWNTs, one can control the adsorption and transport behaviour of polar molecules in SWNTs for using as a stable storage medium or long transport channels. The transport velocity can be tailored by changing the charge on the SWNTs, which may have a further application as modulatable transport channels.
Key words ：
31.15.Qg
78.67.Ch
68.43.Hn
出版日期: 2004-12-01
引用本文:
HUANG Bo-Da;XIA Yue-Yuan;ZHAO Ming-Wen;LI Feng;LIU Xiang-Dong;JI Yan-Ju;SONG Chen;TAN Zhen-Yu;LIU Hui. Single-Walled Carbon Nanotubes Acting as Controllable Transport Channels[J]. 中国物理快报, 2004, 21(12): 2388-2391.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I12/2388
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2004, Vol. 21 
