Title :
Scanning atom probe study of graphite nanofibers
Author :
Nishikawa, Osamu ; Taniguchi, Masahiro ; Ushirozawa, Mizumoto
Author_Institution :
Kanazawa Inst. of Technol., Kanazawa
Abstract :
Graphite nanofibers (GNF) were grown on a SUS304 needle by the thermal CVD method. Source gases were CO (50%) and H2 (50%) at 100 kPa, and growth temperature was 600 degC for 20 minutes. The SUS needle is mounted in the scanning atom probe (SAP) and mass analyzed by applying DC and pulsed voltages to the specimen at room temperature. The mass resolution m/Deltam of the SAP is better than 1000. The field emission characteristics are also examined by operating the SAP as a field emission microscope.
Keywords :
atom probe field ion microscopy; chemical vapour deposition; field emission; nanostructured materials; needles; C; DC voltages; SUS304 needle; field emission characteristics; field emission microscope; graphite nanofibers; pressure 100 kPa; pulsed voltages; scanning atom probe study; temperature 600 C; thermal CVD method; time 20 min; Atomic measurements; Bonding; Carbon dioxide; Electron emission; Hydrogen; Nanobioscience; Needles; Probes; Temperature; Voltage;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2007. IVNC. IEEE 20th International
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-1133-7
Electronic_ISBN :
978-1-4244-1134-4
DOI :
10.1109/IVNC.2007.4480916