Electrical Conductance in a Single Carbon Nanofiber
Abstract:A microwave-plasma enhanced chemical-vapor-deposition (MPECVD) method was used to grow a solo multi-wall carbon nanofiber, which plays as a bridge across nickel electrodes that were separated by the photolithographic process. The length and diameter of carbon nanofiber are 3 m and 100 nm, respectively. The single wire across the electrodes reveals a step current-voltage characteristic measured at high currents and low temperatures while shows a continuous behavior for multiple nanofibers. This stepwise conductance can be successfully dwelled by the quasi one-dimensional transport theory of conductors without considering the electron-phonon interaction at low temperatures and is expected to play a crucial role to determine the electrical behavior of these nanodevices.
Document Type: Research Article
Publication date: 2005-10-01
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