• Catalytically active nickel {110} surfaces in growth of carbon tubular structures 

      Kuang, MingHui; Wang, Z. L. (Zhong Lin); Bai, X. D.; Guo, J. D.; Wang, E. G. (Georgia Institute of TechnologyAmerican Institute of Physics, 2000-03-06)
      Recent interest in the growth of aligned carbon nanotube films using transition metal catalysts has led to questions concerning the growth mechanism involved. In our experiment carbon tubules grown using Ni catalysts exhibit ...
    • Collective oscillations in a single-wall carbon nanotube excited by fast electrons 

      Stöckli, Thomas; Bonard, Jean-Marc; Châtelain, André; Wang, Z. L. (Zhong Lin); Stadelmann, Pierre (Georgia Institute of TechnologyAmerican Physical Society, 2001-08-31)
      Electron energy loss spectroscopy is a well adapted tool for the investigation of the valence excitations of individual nanometer-size particles. The interpretation of the loss spectra of such small particles, however, ...
    • Conductance quantization in multiwalled carbon nanotubes 

      Poncharal, P.; Frank, S.; Wang, Z. L. (Zhong Lin); De Heer, W. A. (Georgia Institute of Technology, 1999)
      We present results of carbon nanotube conductance measurements. The experiments were performed using an scanning probe microscope (SPM) system where a carbon nanotube fiber is connected to the SPM tip and then lowered ...
    • Field emission of individual carbon nanotube with in situ tip image and real work function 

      Xu, Zhi; Bai, X. D.; Wang, E. G.; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2005-10-10)
      The field emission properties of individual multiwalled carbon nanotubes have been measured simultaneously in correlation to the emitter images and their real work functions at tips by the in situ transmission electron ...
    • In situ imaging of field emission from individual carbon nanotubes and their structural damage 

      Wang, Z. L. (Zhong Lin); Gao, Rui Ping; De Heer, W. A.; Poncharal, P. (Georgia Institute of TechnologyAmerican Institute of Physics, 2002-02-04)
      Field emission of individual carbon nanotubes was observed by in situ transmission electron microscopy. A fluctuation in emission current was due to a variation in distance between the nanotube tip and the counter ...
    • Nanomeasurements in Transmission Electron Microscopy 

      Wang, Z. L. (Zhong Lin); Poncharal, P.; De Heer, W. A. (Georgia Institute of TechnologyCambridge University Press, 2000-05)
      Nanomaterials have attracted a great deal of research interest recently. The small size of nanostructures constrains the application of well-established testing and measurement techniques, thus new methods and approaches ...
    • A New Approach Towards Property Nanomeasurements Using In Situ TEM 

      Wang, Z. L. (Zhong Lin); Poncharal, P.; De Heer, W. A.; Gao, Rui Ping (Georgia Institute of TechnologyMaterials Research Society, 2001)
      Property characterization of nanomaterials is challenged by the small size of the structure because of the difficulties in manipulation. Here we demonstrate a novel approach that allows a direct measurement of the mechanical ...
    • Valence excitations in individual single-wall carbon nanotubes 

      Stöckli, Thomas; Bonard, Jean-Marc; Châtelain, André; Wang, Z. L. (Zhong Lin); Stadelmann, Pierre (Georgia Institute of TechnologyAmerican Institute of Physics, 2002-04-22)
      We report on measurements of the plasmon losses of individual single-wall carbon nanotubes by electron energy-loss spectroscopy in a high-resolution transmission electron microscope. The experimental data are compared to ...
    • Work function at the tips of multiwalled carbon nanotubes 

      Gao, Rui Ping; Pan, Zhengwei; Wang, Z. L. (Zhong Lin) (Georgia Institute of TechnologyAmerican Institute of Physics, 2001-03-19)
      The work function at the tips of individual multiwalled carbon nanotubes has been measured by an in situ transmission electron microscopy technique. The tip work function shows no significant dependence on the diameter of ...