Scanning atom probe study of graphite nanofibers

Author

Nishikawa, Osamu ; Taniguchi, Masahiro ; Ushirozawa, Mizumoto

Author_Institution

Kanazawa Inst. of Technol., Kanazawa

fYear

2007

fDate

8-12 July 2007

Firstpage

22

Lastpage

23

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IVNC.2007.4480916

Filename

4480916