Filled CNTs
The preparation of metal-filled carbon nanotubes broadens the field of applications for these nanostructures. As CNTs exhibit an extreme mechanically as well as chemically stable shell structure they provide an excellent casing for various materials. By filling their hollow interior with metals nanoscaled wires can be obtained. Thus filled CNTs promise to be challenging constituents of nano-devices such as nanocables, nanoelectronic circuits, nanoswitches, nanopipettes or nano-thermometers.

Aftertreatment
additional heat treatment under vacuum
- Cu extruded from the carbon sheath;
- C shell remains as an empty nanotube ;
- melting achieved down to 840oC (Nanosize effect).
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Scanning tunneling microscope (STM)-TEM-studies on the Cu nanowires

Applications:
- nano pipettes
- contacting
- spot-welding


Publications:
- P.M.F.J. Costa, D. Golberg, M. Mitome, S. Hampel, A. Leonhardt, B. Buechner, Y. Bando Stepwise current-Driven release of attogram quantities of copper iodide encapsulated in carbon nanotubes, Nanoletters 8 (2008) Nr.10, P.3120-3125 URL
- C. Mueller, S. Hampel, D. Haase, D. Elefant, T. Muehl, A. Vyalikh, R. Klingeler, D. Golberg, A. Leonhardt, B. Buechner Selected synthesis methods for nanowires encapsulated inside carbon nanostructures and their fascinating properties, in: Nanorods, Nanotubes and Nanomaterials Research Progress; W. V. Prescott and A. I. Schwartz (eds.), Nova Science Publishers (2008) P.305-324 URL
- D. Haase, S. Hampel, A. Leonhardt, J. Thomas, N. Mattern, B. Buechner Facile one-step-synthesis of carbon wrapped copper nanowires by thermal decomposition of Copper(II)acetylacetonate, Surface and Coatings Technology 201 (2007) Nr.22-23, P.9184-9188 URL
- D. Golberg, P. Costa, M. Mitome, S. Hampel, D. Haase, C. Mueller, A. Leonhardt, Y. Bando Copper-filled carbon nanotubes: rheostatlike behavior and femtogram copper mass transport, Advanced Materials 19 (2007) Nr.15, P.1937-1942 URL
For more information don't hesitate to contact.
Contacts:
Dr. Silke Hampel
Department 'Chemical Vapor Deposition'
Institute for Solid State Research (IFF)
IFW Dresden
D-01171 Dresden, Germany
Phone: +49-351-4659-323
Fax: +49-351-4659-313
Email: S.Hampel@ifw-dresden.de
Dr. Albrecht Leonhardt
Department 'Chemical Vapor Deposition'
Institute for Solid State Research (IFF)
IFW Dresden
D-01171 Dresden, Germany
Phone: +49-351-4659-299
Fax: +49-351-4659-313
Email: a.leonhardt@ifw-dresden.de

