skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing

Abstract

Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.

Authors:
; ; ; ; ; ;  [1];  [2];  [2];  [3]
  1. International Frontier Center for Advanced Materials, Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8577 (Japan)
  2. (Japan)
  3. (United Kingdom)
Publication Date:
OSTI Identifier:
20960184
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 13; Other Information: DOI: 10.1063/1.2718268; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON; CHEMICAL VAPOR DEPOSITION; COBALT; COMPOSITE MATERIALS; ENCAPSULATION; HOLOGRAPHY; HYDROGEN; MICROWAVE RADIATION; NANOTUBES; PALLADIUM; PLASMA; SUBSTRATES

Citation Formats

Fujita, Takeshi, Hayashi, Yasuhiko, Tokunaga, Tomoharu, Butler, T., Rupesinghe, N. L., Teo, K. B. K., Amaratunga, G. A. J., Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, and Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA. Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing. United States: N. p., 2007. Web. doi:10.1063/1.2718268.
Fujita, Takeshi, Hayashi, Yasuhiko, Tokunaga, Tomoharu, Butler, T., Rupesinghe, N. L., Teo, K. B. K., Amaratunga, G. A. J., Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, & Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA. Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing. United States. doi:10.1063/1.2718268.
Fujita, Takeshi, Hayashi, Yasuhiko, Tokunaga, Tomoharu, Butler, T., Rupesinghe, N. L., Teo, K. B. K., Amaratunga, G. A. J., Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, and Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA. Mon . "Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing". United States. doi:10.1063/1.2718268.
@article{osti_20960184,
title = {Encapsulation of segmented Pd-Co nanocomposites into vertically aligned carbon nanotubes by plasma-hydrogen-induced demixing},
author = {Fujita, Takeshi and Hayashi, Yasuhiko and Tokunaga, Tomoharu and Butler, T. and Rupesinghe, N. L. and Teo, K. B. K. and Amaratunga, G. A. J. and Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555 and Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395 and Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA},
abstractNote = {Vertically aligned carbon nanotubes (VA-CNTs) filled with Pd-Co nanocomposites on an Si substrate have been synthesized by microwave plasma-enhanced chemical vapor deposition. It was confirmed that adjacent Pd-Co nanocomposites in the VA-CNTs were compositionally separated. Most CNTs contained Co pillars on top; however, Pd pillars were rarely present. The strong magnetic induction from an individual Co pillar was revealed by electron holography. The simultaneous phenomenon of the demixing by plasma hydrogen irradiation and the preferential encapsulation into CNTs realized the unique Pd-Co nanocomposites.},
doi = {10.1063/1.2718268},
journal = {Applied Physics Letters},
number = 13,
volume = 90,
place = {United States},
year = {Mon Mar 26 00:00:00 EDT 2007},
month = {Mon Mar 26 00:00:00 EDT 2007}
}