Possible role of charge transport in enhanced carbon nanotube growth
(2006) In Applied Physics A: Materials Science and Processing 85(2). p.109-116- Abstract
We consider the role of electric fields during metal-catalysed thermal chemical vapour deposition growth of carbon nanotubes and show that enhanced growth occurs from a negatively biased electrode. An electric field, applied externally to the growing tubes and/or generated as a result of electron emission or self-biasing, may strongly affect the carbon supply through the catalyst nanoparticle, enhancing the growth rate. Different aspects of the growth process are analysed: the nature of the nanoparticle catalysis, carbon dissolution kinetics, electron emission from the nanotube tips, charge transport in the nanotube-catalytic nanoparticle system and carbon drift and diffusion through the catalyst under the action of the electric field.... (More)
We consider the role of electric fields during metal-catalysed thermal chemical vapour deposition growth of carbon nanotubes and show that enhanced growth occurs from a negatively biased electrode. An electric field, applied externally to the growing tubes and/or generated as a result of electron emission or self-biasing, may strongly affect the carbon supply through the catalyst nanoparticle, enhancing the growth rate. Different aspects of the growth process are analysed: the nature of the nanoparticle catalysis, carbon dissolution kinetics, electron emission from the nanotube tips, charge transport in the nanotube-catalytic nanoparticle system and carbon drift and diffusion through the catalyst under the action of the electric field. A fundamental tenet for modelling of charge-transport dynamics during the nanotube growth process is proposed.
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- author
- Bulgakova, N. M. ; Bulgakov, A. V. ; Svensson, J. LU and Campbell, E. E.B. LU
- publishing date
- 2006-11-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics A: Materials Science and Processing
- volume
- 85
- issue
- 2
- pages
- 8 pages
- publisher
- Springer
- external identifiers
-
- scopus:33748699366
- ISSN
- 0947-8396
- DOI
- 10.1007/s00339-006-3684-z
- language
- English
- LU publication?
- no
- id
- 0b2ffc48-1a45-43c2-a30f-66cd9d2ea8f3
- date added to LUP
- 2020-05-05 12:19:30
- date last changed
- 2022-02-01 06:02:43
@article{0b2ffc48-1a45-43c2-a30f-66cd9d2ea8f3,
abstract = {{<p>We consider the role of electric fields during metal-catalysed thermal chemical vapour deposition growth of carbon nanotubes and show that enhanced growth occurs from a negatively biased electrode. An electric field, applied externally to the growing tubes and/or generated as a result of electron emission or self-biasing, may strongly affect the carbon supply through the catalyst nanoparticle, enhancing the growth rate. Different aspects of the growth process are analysed: the nature of the nanoparticle catalysis, carbon dissolution kinetics, electron emission from the nanotube tips, charge transport in the nanotube-catalytic nanoparticle system and carbon drift and diffusion through the catalyst under the action of the electric field. A fundamental tenet for modelling of charge-transport dynamics during the nanotube growth process is proposed.</p>}},
author = {{Bulgakova, N. M. and Bulgakov, A. V. and Svensson, J. and Campbell, E. E.B.}},
issn = {{0947-8396}},
language = {{eng}},
month = {{11}},
number = {{2}},
pages = {{109--116}},
publisher = {{Springer}},
series = {{Applied Physics A: Materials Science and Processing}},
title = {{Possible role of charge transport in enhanced carbon nanotube growth}},
url = {{http://dx.doi.org/10.1007/s00339-006-3684-z}},
doi = {{10.1007/s00339-006-3684-z}},
volume = {{85}},
year = {{2006}},
}