Spiral nucleation of silicon solidified on heterogeneous surface of carbon nanocones

Li, H.; Li, Y. F.; Liew, K. M.; Zhang, J. X.; Liu, X. F.
November 2009
Applied Physics Letters;11/2/2009, Vol. 95 Issue 18, p183101
Academic Journal
Molecular dynamics studies are carried out to examine the spiral nucleation mode of silicon solidified on the surface of carbon nanocones (CNCs). The silicon atoms are concentrated to form magic multilayered nanocones composed of coaxial and equidistant conical shells. Heterogeneous nucleation that occurred on CNCs follows a spiral nucleating mechanism. The structures of so-formed silicon cones show strict structural matching and strong structural relevance with CNCs. The uniform internal potential field around the CNCs is responsible for the formation of the coaxial conical shells.


Related Articles

  • Density control on self-assembling of Ge islands using carbon-alloyed strained SiGe layers. Bernardi, A.; Alonso, M. I.; Goñi, A. R.; Ossó, J. O.; Garriga, M. // Applied Physics Letters;9/4/2006, Vol. 89 Issue 10, p101921 

    The authors show that by deposition of 0.1 ML of carbon prior to the self-assembled growth of Ge quantum dots on a strained Si1-xGex buffer layer a striking decrease in dot density by two orders of magnitude from about 1011 to 109 cm-2 occurs when the Ge content of the buffer layer increases...

  • Silicon nanoclusters formed through self-assembly on CaF[sub 2] substrates: morphology and optical properties. Andersson, M.; Iline, A.; Stietz, F.; Träger, F. // Applied Physics A: Materials Science & Processing;2000, Vol. 70 Issue 6, p625 

    Abstract. We studied the influence of the size and shape of silicon nanoclusters on their optical response. For this purpose, clusters were prepared by deposition, and subsequent diffusion and nucleation, of Si atoms on CaF[sub 2] substrate surfaces. By varying the growth parameters, oblate...

  • Nearest-neighbor distance distribution of diamond nuclei on substrate surfaces. Ascarelli, P.; Cappelli, E.; Pinzari, F. // Applied Physics Letters;3/31/1997, Vol. 70 Issue 13, p1697 

    Analyzes the depletion of nucleation density around each diamond nucleus on silicon substrate surfaces. Effect of diamond-substrate lattice misfit on deformation; Influence of Gibbs free energy on nucleation density; Generation of misfit strain with every dislocation.

  • Synthesis of silicon nitride nanorods using carbon nanotube as a template. Weiqiang Han; Shoushan Fan // Applied Physics Letters;10/20/1997, Vol. 71 Issue 16, p2271 

    Presents a method to prepare silicon nitride nanoscale rods using carbon nanotube as a template. Reaction of carbon nanotubes with a mixture of silicon and silicon dioxide powder in nitrogen atmosphere; Sizes of the nanorods; Discussion of the formation mechanism of the nanorods.

  • Branching induced faceting of Si nanotrees. Doerk, Gregory S.; Radmilovic, Velimir; Maboudian, Roya // Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p123117 

    The sidewalls of silicon nanotree trunks grown by the vapor-liquid-solid mechanism with branches seeded by Au surface migration are shown to exhibit strong sawtooth nanofaceting in the region of branching. For Si nanowires grown along the <111> direction, facets found after Au surface migration...

  • Deformation mechanisms in silicon nanoparticles. Ning Zhang; Qian Deng; Yu Hong; Liming Xiong; Shi Li; Strasberg, Matthew; Weiqi Yin; Yongjie Zou; Taylor, Curtis R.; Sawyer, Gregory; Youping Chen // Journal of Applied Physics;Mar2011, Vol. 109 Issue 6, p063534 

    We report here on the observation of dislocation nucleation and glide in silicon nanoparticles, after phase transformation from diamond cubic to β-tin crystal structure, within the formed β-tin metallic phase region in atomistic simulations of indentation. The simulation results provide an...

  • Is the c(4x4) reconstruction of Si(001) associated with the presence of carbon? Miki, Kazushi; Sakamoto, Kunihiro // Applied Physics Letters;12/1/1997, Vol. 71 Issue 22, p3266 

    Demonstrates the reconstruction of hydrogen-terminated Si(001) surface around 500 degrees Celsius, c(4x4). Association of c(4x4) reconstruction with carbon contamination; Insufficiency of the carbon concentration for carbon atoms to be a component of the c(4x4) structure; Lack of effect of...

  • Synthesis of Si2N2O nanowires in porous Si2N2O-Si3N4 substrate using Si powder. Byong-Taek Lee; Rajat Kanti Paul; Kap-Ho Lee; Hai-Doo Kim // Journal of Materials Research;Mar2007, Vol. 22 Issue 3, p4 

    The formation of synthesized Si2N2O nanowires using the process of Si nitridation depending on the addition of carbon was investigated. The diameter of the Si2N2O nanowires having a high aspect ratio of about 50-80 nm was found in the porous Si2N2O-Si3N4 substrate to which 6 wt% C was added. The...

  • Influence of size effects on the nucleation processes in a condensed phase. Levdanskii, V.; Smolik, J.; Zdimal, V. // Journal of Engineering Physics & Thermophysics;May2011, Vol. 84 Issue 3, p574 

    Some problems related to the influence of size effects on the nucleation processes in nanoparticles have been investigated theoretically.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics