AVS 51st International Symposium
    Nanometer-scale Science and Technology Tuesday Sessions
       Session NS-TuM

Paper NS-TuM8
Impregnation of Osmium Dioxide to MWCNTs and Improvement of the Electron Emission Characteristics

Tuesday, November 16, 2004, 10:40 am, Room 213D

Session: Nanotube Processing and Composite Materials
Presenter: T. Noguchi, KEK, Japan
Authors: T. Noguchi, KEK, Japan
M. Shimamoto, KEK, Japan
M. Nishiwaki, KEK, Japan
K. Tatenuma, KAKEN Inc., Japan
S. Kato, KEK, Japan
Correspondent: Click to Email
Osmium dioxide impregnation to MWCNTs was attempted in order to improve the electron emission characteristics. OsO@sub 2@ similar to RuO@sub 2@ has desirable properties including high conductivity (6x10@super -5@ @ohm@cm at 300K), high catalytic performance, and good chemical and physical stabilities. In this study, OsO@sub 2@ impregnation to MWCNTs was conducted by utilizing osmium tetraoxide in a solvent at ambient temperatures and pressures. When compared to MWNTs without impregnation treatment, those MWCNTs impregnated with OsO@sub 2@ have superior and more efficient electrical characteristics with stable emission at a lower electric field as observed for RuO2 impregnated MWCNTs.