EELS plasmon studies of silver/carbon core/shell nanocables prepared by simple arc discharge

L. S. Wang, D. B. Buchholz, Y. Li, J. Li, C. Y. Lee, H. T. Chiu, R. P.H. Chang

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Abstract

A method for the fabrication of large quantities of high quality silver nanocables encapsulated in carbon nanotubes (Ag@C) using a hydrogen arc is presented. A growth mechanism based on the generation of poly-aromatic hydrocarbons by the hydrogen arc is proposed. The size-dependent electronic structures of the resultant materials are investigated using electron energy loss spectroscopy (EELS). The surface plasmon and bulk-excitation character observed by EELS are discussed. As the diameter of Ag@C nanocable decreases, the surface and bulk plasmons of the silver core shift to lower energy and the peaks broaden. Measurements of electrical conductivity exhibits a liner current-voltage character with a conductivity of 0.5×104 S/cm for the nanocable structure.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalApplied Physics A: Materials Science and Processing
Volume87
Issue number1
DOIs
Publication statusPublished - Apr 1 2007

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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