AVS 53rd International Symposium
    Nanometer-scale Science and Technology Thursday Sessions
       Session NS-ThP

Paper NS-ThP10
Fabrication of Suspended Single-Walled Carbon Nanotube on Vertically-Aligned Carbon Nanofiber Templates and Electrical Characteristics

Thursday, November 16, 2006, 5:30 pm, Room 3rd Floor Lobby

Session: Nanoscale Science and Technology Poster Session
Presenter: K.C. Leou, National Tsing Hua University, ROC
Authors: Z.G. Wu, National Tsing Hua University, ROC
C.H. Weng, National Tsing Hua University, ROC
H. Lin, National Tsing Hua University, ROC
W.Y. Lee, National Tsing Hua University, ROC
C.H. Tsai, National Tsing Hua University, ROC
K.C. Leou, National Tsing Hua University, ROC
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We have developed a new method to directly synthesize suspended carbon nanotubes (su-SWNTs) crossing the tips of vertically-aligned carbon nanofibers (CNFs) which were sharpened by energetic argon plasma.@footnote 1@ Via this approach, here we demonstrate the fabrication of electronic devices of novel su-SWNTs-on-CNFs structure and investigate the nano-sized contact between su-SWNT and CNFs as well as the electrical characteristics. Highly n-doped (phosphorous) poly-Si, due to its similarity to p-type single-crystalline Si substrate we used before, is demonstrated a good choice of under-layered electrodes for the fabrication of su-SWNTs-on-CNFs electronic devices. The electrical characteristics, including two (source/drain), three (source/drain/bulk-gate), and four (source/drain/bulk-gate/local-gate) terminal measurements reveal the electronic device features, such as hysteresis-free electrical transport, negative differential conductance, etc. Furthermore, we use multiple nano-probes to exert electrostatic forces, and in-situ observe the deformation of su-SWNTs in a scanning electron microscope to investigate the contact between su-SWNT and CNFs. @FootnoteText@ @footnote 1@C. H. Weng, W. Y. Lee, Z. Y. Juang, K. C. Leou, and C. H. Tsai, Nanotechnology 17, 1 (2006).