@article{oai:nitech.repo.nii.ac.jp:00005237,
 author = {Zhang, Y. B. and Lau, S. P. and Huang, L. and Tanemura, Masaki},
 issue = {12},
 journal = {APPLIED PHYSICS LETTERS},
 month = {Mar},
 note = {Carbon nanotubes (CNTs) with supreme field emission properties were synthesized by depositing Co-containing amorphous carbon (a-C:Co) composite films using filtered cathodic vacuum arc technique with a 15 at% Co-containing graphite target and subsequently growing CNTs using biased thermal chemical vapor deposition at 580°C with the a-C:Co composite film as a catalyst layer. The as-grown CNTs with a thin diameter of about 10 nm have a low threshold field of 1.6 V/μm and a stable current density of 2.1 mA/cm2 at 3 V/μm. Thus an x-ray source was built in a diode configuration using the CNTs as its cold electron source showing good potential in x-ray radiography., application/pdf},
 pages = {123115-1--123115-3},
 title = {Carbon nanotubes synthesized by biased thermal chemical vapor deposition as an electron source in an x-ray tube},
 volume = {86},
 year = {2005}
}