Synthesis and characterization of carbon nanotubes

  • Single-walled carbon nanotubes (SWCNTs)
  • Double-walled carbon nanotubes (DWCNTs)
  • Multi-walled carbon nanotubes (MWCNTs)

synthesis and characterization of graphene

  • Monolayer graphene
  • Bilayer graphene
  • Few-layer graphene

carbon nanotube field electron emitters

     A free-standing carbon nanotube (CNT) thin film is formed as a cold cathode electrode for the electron emitter.
     CNT bundles in the film, aligned perpendicular to the film edge, provide many electron emission sites. A collimated dense electron beam is emitted from the tips of the CNT bundles.

cold cathode x-ray tubes

     The core components of a cold cathode X-ray tube include a CNT field electron emitter, a gate with a slit, a curved elliptical cavity focusing lens, and a rotating reflective anode.

paradigm shift in x-ray tube technology

     For the next generation of X-ray systems, the hot cathode X-ray tubes must be changed to cold cathode X-ray tubes.