Electron Emission Devices Using Carbon Nanocoils
Abstract:We have found out that carbon nanocoils have a highly potential ability for an electron emission device. Carbon nanocoils were prepared in high yield by catalytic thermal chemical vapor deposition. The source gas and catalyst are acetylene and iron-coated indium tin oxide, respectively. The measurement of the field emission current from the nanocoils at a pressure of 1 × 10−6 Torr shows the turn-on voltage as low as 180 V at the electrode gap of 130 μm and the saturation current density more than 10 mA/cm2, which is similar to or smaller than those of most carbon nanotube emitters. The fluorescence is more uniform compared with that of the nanotube emitters. The fluorescence experiment also indicates that the body as well as the tip of a coil work as an effective emission site. A lifetime test for 100 hours under the current density of 1 mA/cm2 shows no large fluctuation. These results indicate that the nanocoils have a spatially uniform emission of electrons and a long stability.
Document Type: Research Article
Publication date: 2001-01-01
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites