Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis
<p>Abstract</p> <p>The assembly of single-walled carbon nanotubes (SWCNTs) using the AC dielectrophoresis technique is studied theoretically. It is found that the comb electrode bears better position control of SWCNTs compared to the parallel electrode. In the assembly, when some S...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2008-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1007/s11671-008-9217-2 |
| _version_ | 1797715094636855296 |
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| author | Yang Liu Lu Yang Chen Changxin Zhang Yafei |
| author_facet | Yang Liu Lu Yang Chen Changxin Zhang Yafei |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | <p>Abstract</p> <p>The assembly of single-walled carbon nanotubes (SWCNTs) using the AC dielectrophoresis technique is studied theoretically. It is found that the comb electrode bears better position control of SWCNTs compared to the parallel electrode. In the assembly, when some SWCNTs bridge the electrode first, they can greatly alter the local electrical field so as to “screen off” later coming SWCNTs, which contributes to the formation of dispersed SWCNT array. The screening distance scales with the gap width of electrodes and the length of SWCNTs, which provides a way to estimate the assembled density of SWCNTs. The influence of thermal noise on SWCNTs alignment is also analyzed in the simulation. It is shown that the status of the array distribution for SWCNTs is decided by the competition between the thermal noise and the AC electric-field strength. This influence of the thermal noise can be suppressed by using higher AC voltage to assemble the SWCNTs.</p> |
| first_indexed | 2024-03-12T08:01:47Z |
| format | Article |
| id | doaj.art-3bf8de24a022416aaf1eb0835a54dff5 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T08:01:47Z |
| publishDate | 2008-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-3bf8de24a022416aaf1eb0835a54dff52023-09-02T19:49:14ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2008-01-0142157164Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC DielectrophoresisYang LiuLu YangChen ChangxinZhang Yafei<p>Abstract</p> <p>The assembly of single-walled carbon nanotubes (SWCNTs) using the AC dielectrophoresis technique is studied theoretically. It is found that the comb electrode bears better position control of SWCNTs compared to the parallel electrode. In the assembly, when some SWCNTs bridge the electrode first, they can greatly alter the local electrical field so as to “screen off” later coming SWCNTs, which contributes to the formation of dispersed SWCNT array. The screening distance scales with the gap width of electrodes and the length of SWCNTs, which provides a way to estimate the assembled density of SWCNTs. The influence of thermal noise on SWCNTs alignment is also analyzed in the simulation. It is shown that the status of the array distribution for SWCNTs is decided by the competition between the thermal noise and the AC electric-field strength. This influence of the thermal noise can be suppressed by using higher AC voltage to assemble the SWCNTs.</p>http://dx.doi.org/10.1007/s11671-008-9217-2Single-walled carbon nanotubes (SWCNTs)AC dielectrophoresisSimulation |
| spellingShingle | Yang Liu Lu Yang Chen Changxin Zhang Yafei Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis Nanoscale Research Letters Single-walled carbon nanotubes (SWCNTs) AC dielectrophoresis Simulation |
| title | Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis |
| title_full | Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis |
| title_fullStr | Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis |
| title_full_unstemmed | Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis |
| title_short | Theoretical Simulation on the Assembly of Carbon Nanotubes Between Electrodes by AC Dielectrophoresis |
| title_sort | theoretical simulation on the assembly of carbon nanotubes between electrodes by ac dielectrophoresis |
| topic | Single-walled carbon nanotubes (SWCNTs) AC dielectrophoresis Simulation |
| url | http://dx.doi.org/10.1007/s11671-008-9217-2 |
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