Efficient Fabrication of Carbon Nanotube Point Electron Sources by Dielectrophoresis

Efficient Fabrication of Carbon Nanotube Point Electron Sources by Dielectrophoresis

Carbon nanotube tips (see Figure) with controllable length, diameter, and orientation have been fabricated by the dielectrophoresis process. They are capable of delivering high and stable electron‐field‐emission currents of 3–5 μA (105 A cm–2). The emitters can potentially be used as the field‐emiss...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Weinheim) 2004-07, Vol.16 (14), p.1219-1222
Hauptverfasser: Zhang, J., Tang, J., Yang, G., Qiu, Q., Qin, L.-C., Zhou, O.
Format: Artikel
Sprache:eng
Schlagworte:
Block copolymers
carbon
Carbon dioxide
Carbon dioxide, supercritical
Carbon nanotubes
Cerium
Electrophoretic deposition
Nanostructures
Nanotubes
Nanotubes, carbon
Nanowires
supercritical
Supercritical fluids
Template-assisted synthesis
Thin films
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Carbon nanotube tips (see Figure) with controllable length, diameter, and orientation have been fabricated by the dielectrophoresis process. They are capable of delivering high and stable electron‐field‐emission currents of 3–5 μA (105 A cm–2). The emitters can potentially be used as the field‐emission electron sources for precision vacuum electronic instruments such as electron microscopes.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200400124