IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Nanotubes: Science and Applications Topical Conference Tuesday Sessions
       Session NT-TuP

Paper NT-TuP4
Scanning Tunneling Microscopy of Single-walled Carbon Nanotubes with Metallo-phthalocyanine Adsorbates

Tuesday, October 30, 2001, 5:30 pm, Room 134/135

Session: Poster Session
Presenter: H. Suh, Seoul National University, Korea
Authors: J. Lee, Seoul National University, Korea
J.-Y. Park, Cornell University
H.J. Kim, Seoul National University, Korea
H. Suh, Seoul National University, Korea
Y. Kuk, Seoul National University, Korea
H. Kato, Nagoya University, Japan
T. Okazaki, Nagoya University, Japan
H. Shinohara, Nagoya University, Japan
Correspondent: Click to Email
Since the existence of carbon nanotubes are first reported in early 1990s, efforts have been made to characterize the electronic, transport and mechanical properties of this new form of carbonaceous material in various situations with views to exploit them as building blocks of useful nanoscale devices or sensors. One of the major usefulness of nanotubes lies in the fact that the electronic and transport properties of a nanotube as a metal or a semiconductor are very sensitive to chemical adsorbates whose concentration can be well controlled and modulated after the creation of the nanotube. Therefore it is an intuitively natural idea to dope the nanotubes with functional molecules sensitive to a few specific chemical ligands or physical environments (light, temperature, etc) to use them as physical, chemical or biological sensors. In this report we present the results of recent STM studies on nanotubes with metallo-phthalocyanine (M-Pc) molecule adsorbates. M-Pc's are chosen because they are chemically stable up to the sublimation temperature, immobile at room temperature on most host surfaces and have different electronic sensitivities to various toxic gases. Atomic resolution images and spectroscopic data on and near the adsorbed single M-Pc will be presented.