Tunneling spectroscopy of disordered multiwalled carbon nanotubes
نویسندگان
چکیده
منابع مشابه
Nonequilibrium tunneling spectroscopy in carbon nanotubes.
We report measurements of the nonequilibrium electron energy distribution in carbon nanotubes. Using tunneling spectroscopy via a superconducting probe, we study the shape of the local electron distribution functions, and hence energy relaxation rates, in nanotubes that have bias voltages applied between their ends. At low temperatures, electrons interact weakly in nanotubes of a few microns ch...
متن کاملTunneling spectroscopy on carbon nanotubes using STM
Single-wall carbon nanotubes (SWNTs) prepared on the graphite substrate were investigated by a low-temperature scanning tunneling microscope at 77K. From the tunneling spectra with high-energy resolution obtained at 77K, both metallic and semiconducting SWNTs were found in the same bundle. For the metallic SWNT, the conductance curve inside the first peak is finite and quite flat. The width bet...
متن کاملScanning tunneling spectroscopy on crossed carbon nanotubes
Crossing nanotubes were investigated using scanning tunneling microscopy ~STM! and spectroscopy. From the analysis of the measured mechanical deformation of the nanotubes, the contact force between the nanotubes is estimated to be 1 nN. Spectroscopy measurements showed two effects on the electronic structure: ~i! band bending, which we attribute to a position-dependent interaction with the subs...
متن کاملPolyurea-functionalized multiwalled carbon nanotubes: synthesis, morphology, and Raman spectroscopy.
An in situ polycondensation approach was applied to functionalize multiwalled carbon nanotubes (MWNTs), resulting in various linear or hyperbranched polycondensed polymers [e.g., polyureas, polyurethanes, and poly(urea-urethane)-bonded carbon nanotubes]. The quantity of the grafted polymer can be easily controlled by the feed ratio of monomers. As a typical example, the polyurea-functionalized ...
متن کاملMultiwalled Carbon Nanotubes: Environmental Application
The high external surface area leads to a significant increase in the surface contact between the gaseous or liquid reactants and the active phase supported on this nanostructured host which is a prerequisite for its use as catalyst support, especially in liquid phase medium where diffusion rate is predominant [2]. Also, the strong interactions between the exposed prismatic planes and the depos...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.71.125425