Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-18T01:12:05.933Z Has data issue: false hasContentIssue false
  • English
  • Français

Energetic Ion Bombardment of Carbon Nanotubes

Published online by Cambridge University Press:  13 April 2015

Gregory A. Konesky
Gregory A. Konesky*
Affiliation:
National NanoTech, Inc., 3 Rolling Hill Rd., Hampton Bays, NY 11946, U.S.A.
Get access

Abstract

Carbon Nanotubes (CNTs) exhibit exceptional properties in terms of high strength-to-weight, high electrical conductivity, and high thermal conductivity, and have been employed as a reinforcement in various composites and other materials. Their tolerance to radiation environments may be suggested by their response to energetic ion bombardment. We discuss the effects of argon ion bombardment of both thin and thick multiwall carbon nanotube films over a range of 4 to 11 keV at fluence levels up to the order of 1021 ions/cm2. While individual carbon atoms are readily displaced from a carbon nanotube by bombardment at these energies, these nanotubes also exhibit a self-healing capability. At moderate energies and fluence, if two or more carbon nanotubes are touching and an ion strikes this point, they heal together where a junction or cross-link between them is created and the nanotubes interpenetrate. Even though some of the properties of the carbon nanotubes may be degraded by ion bombardment at non-junction regions, we have demonstrated a bulk cross-linked thin film of randomly oriented multiwall carbon nanotubes with an isotropic thermal conductivity of 2150 W/m K. At higher energies and fluence, the carbon nanotubes appear to collapse and reform aligned parallel to the incoming ion bombardment trajectory, producing high aspect ratio tapered structures. These structures are, in general, fully dense, unlike the loosely packed random carbon nanotube array from which they originated. There is also a sharp transition at the base of these structures from the dense form to the loose-packed form, suggesting that these structures may inhibit further penetration of the energetic ions.

Keywords

ion-beam processingnanostructureradiation effects
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1743: Symposium DD/WW – Materials and Radiation Effects for Advanced Nuclear Technologies , 2015 , mrsf14-1743-dd01-09
Copyright
Copyright © Materials Research Society 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Berber, S., Kwon, Y. and Tomanek, D., PRL 84(20), 4613–4616 (2000).CrossRefGoogle Scholar
Kim, P., Shi, L., Madjumdar, A. and McEuen, P., PRL 87(21), 215502 (2001).CrossRefGoogle Scholar
Kwon, Y., Saito, S. and Tomanek, D., Phys. Rev. B 58, R13314 (1998).CrossRefGoogle Scholar
Schwab, K., Henriksen, E., Worlock, J. and Roukes, M., Nature 404, 974 (2000).CrossRefGoogle Scholar
Yang, D., Zhang, Q., Chen, G., Yoon, S., Ahn, J., Wang, S., Zhou, Q., Wang, Q. and Li, J., Physical Review B 66, 165440 (2002).CrossRefGoogle Scholar
Shinde, S. and Goela, J., High Thermal Conductivity Materials, (Springer, 2006) 227–265.CrossRefGoogle Scholar
Krasheninnikov, A., Nordlund, K. and Keinonen, J., Physical Review B 66, 245403 (2002).CrossRefGoogle Scholar
Krasheninnikov, A., Nordlund, K., Keinonen, J. and Banhart, F., Nucl. Instrum. Meth. B 202, 224–229 (2003).CrossRefGoogle Scholar
Wei, Q., D’Arcy-Gall, J., Ajayan, P. and Ramanath, G., Applied Physics Letters 83, 3581 (2003).CrossRefGoogle Scholar
Loya, M., Park, J., Chen, L., Brammer, K., Bandaru, P. and Jin, S., Nano 3(6), 449–454 (2008).CrossRefGoogle Scholar
Salonen, E., Krasheninnikov, A. and Nordlund, K., Nucl. Instrum. Meth. B 193, 603–608 (2002).CrossRefGoogle Scholar
Krasheninnikov, A., Nordlund, K., and Keinonen, J., Physical Review B 65, 165423 (2002).Google Scholar
Krasheninnikov, A., Nordlund, K., Sirvio, M., Salonen, E. and Keinonen, J., Physical Review B 63, 245405 (2001).Google Scholar
Krasheninnikov, A. and Nordlund, K., Journal of Applied Physics 107, 071301 (2010).CrossRefGoogle Scholar
Krasheninnikov, A., Nordlund, K., Lehtinen, P., Foster, A., Ayuela, A., and Nieminen, R., Carbon 42, 1021–1025 (2004).CrossRefGoogle Scholar
Gan, Y., Kotakoski, J., Krasheninnikov, A., Nordlund, K. and Banhart, f., New Journal of Physics 10, 023022 (2008).CrossRefGoogle Scholar
Cahill, D., Rev. Sci. Instrum. 61, 802 (1990).CrossRefGoogle Scholar