Plasma-assisted self-sharpening of platelet-structured single-crystalline carbon nanocones

被引：85
作者：
Levchenko, I.
Ostrikov, K. [1 ]
Long, J. D.
Xu, S.
机构：
[1] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
[2] Nanyang Technol Univ, PSAC, NIE, IAS, Singapore 637616, Singapore
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期
基金：
澳大利亚研究理事会;
关键词：
D O I：
10.1063/1.2784932
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A mechanism and model for the vertical growth of platelet-structured vertically aligned single-crystalline carbon nanostructures by the formation of graphene layers on a flat top surface are proposed and verified experimentally. It is demonstrated that plasma-related effects lead to self-sharpening of tapered nanocones to form needlelike nanostructures, in a good agreement with the predicted dependence of the radius of a nanocone's flat top on the incoming ion flux and surface temperature. The growth mechanism is relevant to a broad class of nanostructures including nanotips, nanoneedles, and nanowires and can be used to improve the predictability of nanofabrication processes.
引用
收藏
页数：3
相关论文
共 26 条
[1]   Growth of vertically aligned carbon nanofibers by low-pressure inductively coupled plasma-enhanced chemical vapor deposition [J].
Caughman, JBO ;
Baylor, LR ;
Guillorn, MA ;
Merkulov, VI ;
Lowndes, DH ;
Allard, LF .
APPLIED PHYSICS LETTERS, 2003, 83 (06) :1207-1209
[2]   Behaviour of oxygen atoms near the surface of nanostructured Nb2O5 [J].
Cvelbar, U. ;
Mozetic, M. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (08) :2300-2303
[3]   Ion-assisted precursor dissociation and surface diffusion: Enabling rapid, low-temperature growth of carbon nanofibers [J].
Denysenko, I. ;
Ostrikov, K. .
APPLIED PHYSICS LETTERS, 2007, 90 (25)
[4]   Inductively coupled Ar/CH4/H2 plasmas for low-temperature deposition of ordered carbon nanostructures [J].
Denysenko, IB ;
Xu, S ;
Long, JD ;
Rutkevych, PP ;
Azarenkov, NA ;
Ostrikov, K .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (05) :2713-2724
[5]   Electronic temperature and density of the plasma produced by nanosecond ultraviolet laser ablation of LiF -: art. no. 181501 [J].
Gordillo-Vázquez, FJ ;
Perea, A ;
Mckiernan, AP ;
Afonso, CN .
APPLIED PHYSICS LETTERS, 2005, 86 (18) :1-3
[6]   Low temperature (<100 °C) patterned growth of ZnO nanorod arrays on Si [J].
Kang, B. S. ;
Pearton, S. J. ;
Ren, F. .
APPLIED PHYSICS LETTERS, 2007, 90 (08)
[7]   Current-driven ignition of single-wall carbon nanotubes [J].
Keidar, M ;
Raitses, Y ;
Knapp, A ;
Waas, AM .
CARBON, 2006, 44 (05) :1022-1024
[8]   Plasma drift and nonuniformity effects in plasma immersion ion implantation [J].
Keidar, M ;
Monteiro, OR ;
Brown, IG .
APPLIED PHYSICS LETTERS, 2000, 76 (21) :3002-3004
[9]   Magnetic field effect on the sheath thickness in plasma immersion ion implantation [J].
Keidar, M ;
Monteiro, OR ;
Anders, A ;
Boyd, ID .
APPLIED PHYSICS LETTERS, 2002, 81 (07) :1183-1185
[10]   Catalytic growth of single-wall carbon nanotubes: An ab initio study [J].
Lee, YH ;
Kim, SG ;
Tomanek, D .
PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2393-2396
123