Growth mechanism of carbon nanotubes : a nano Czochralski model
Carbon nanotubes (CNTs) have been under intense investigations during the past two decades due to their unique physical and chemical properties; however, there is still no commonly accepted growth mechanism to describe the growth behavior of CNTs. Here, we propose a nano Czochralski (CZ) model which...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/79832 http://hdl.handle.net/10220/9190 |
| _version_ | 1826121000715026432 |
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| author | Lu, Jingyu Miao, Jianmin |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Lu, Jingyu Miao, Jianmin |
| author_sort | Lu, Jingyu |
| collection | NTU |
| description | Carbon nanotubes (CNTs) have been under intense investigations during the past two decades due to their unique physical and chemical properties; however, there is still no commonly accepted growth mechanism to describe the growth behavior of CNTs. Here, we propose a nano Czochralski (CZ) model which regards the catalytic growth of a CNT as a CZ process taking place on the nano scale. The main idea is that, during the CNT growth, each catalyst particle acts as a nano crucible to nucleate and maintain the CNT growth, and the extruding CNT rotates relative to the nano crucible, leading to a chirality-dependent growth rate. In this case, the structural quality gradually changes along the CNT due to the dynamic generation-reconstruction-diffusion of defects during the CNT growth. The nano CZ mechanism may also apply to the catalytic growth of many other one-dimensional (1D) nanostructures (including various nanotubes and nanowires), thus further efforts will be stimulated in the quality and property control, as well as application explorations of these 1D nanomaterials. |
| first_indexed | 2024-10-01T05:25:36Z |
| format | Journal Article |
| id | ntu-10356/79832 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:25:36Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/798322023-03-04T17:13:10Z Growth mechanism of carbon nanotubes : a nano Czochralski model Lu, Jingyu Miao, Jianmin School of Mechanical and Aerospace Engineering Carbon nanotubes (CNTs) have been under intense investigations during the past two decades due to their unique physical and chemical properties; however, there is still no commonly accepted growth mechanism to describe the growth behavior of CNTs. Here, we propose a nano Czochralski (CZ) model which regards the catalytic growth of a CNT as a CZ process taking place on the nano scale. The main idea is that, during the CNT growth, each catalyst particle acts as a nano crucible to nucleate and maintain the CNT growth, and the extruding CNT rotates relative to the nano crucible, leading to a chirality-dependent growth rate. In this case, the structural quality gradually changes along the CNT due to the dynamic generation-reconstruction-diffusion of defects during the CNT growth. The nano CZ mechanism may also apply to the catalytic growth of many other one-dimensional (1D) nanostructures (including various nanotubes and nanowires), thus further efforts will be stimulated in the quality and property control, as well as application explorations of these 1D nanomaterials. Published version 2013-02-20T05:47:54Z 2019-12-06T13:34:58Z 2013-02-20T05:47:54Z 2019-12-06T13:34:58Z 2012 2012 Journal Article Lu, J., & Miao, J. (2012). Growth mechanism of carbon nanotubes : a nano Czochralski model. Nanoscale Research Letters, 7(1), 356. 1556-276X https://hdl.handle.net/10356/79832 http://hdl.handle.net/10220/9190 10.1186/1556-276X-7-356 22747835 en Nanoscale Research Letters © 2012 The Authors. application/pdf |
| spellingShingle | Lu, Jingyu Miao, Jianmin Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title | Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title_full | Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title_fullStr | Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title_full_unstemmed | Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title_short | Growth mechanism of carbon nanotubes : a nano Czochralski model |
| title_sort | growth mechanism of carbon nanotubes a nano czochralski model |
| url | https://hdl.handle.net/10356/79832 http://hdl.handle.net/10220/9190 |
| work_keys_str_mv | AT lujingyu growthmechanismofcarbonnanotubesananoczochralskimodel AT miaojianmin growthmechanismofcarbonnanotubesananoczochralskimodel |