Cross-linked silicon based polymer nano-wire formation by high energy charged particles

S. Seki, S. Tsukuda, S. Tagawa, M. Sugimoto

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


High energy charged particles penetrating into silicon based polymer materials cause non-homogeneous cross-linking in the nanospace along the particle trajectories, giving nano-gels (nano-wires) of polymers with cylindrical structures of regular length and thickness. Polycarbosilanes with a variety of molecular weights were used as the target polymer materials in the present study, and the preparation of nano-wires based on cross-linked polycarbosilanes were demonstrated. The molecular weight of the polymers is one of the factors to determine the nano-wire thickness which has been controlled precisely from 5.4-6.5 nm as the radii of the cross section by the present technique upon irradiation by 388 MeV Ni ions. Drastic increase in the radii is observed with an increase in the deposited energy density of incident charged particles. The size dependence is well interpreted by a model of radial energy distribution in the ion track.

Original languageEnglish
Pages (from-to)8486-8489
Number of pages4
JournalSurface and Coatings Technology
Issue number19-20 SPEC. ISS.
Publication statusPublished - 2007 Aug 5
Externally publishedYes


  • Atomic force microscopy
  • Charged particle
  • Ion beam
  • Nano-wire
  • Polycarbosilane
  • Polymer

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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