The Reliability Improvements of Carbon Nanotubes Emitters by Utilizing an Fe–Ti Codeposited Catalyst

Abstract

We undertake a theoretical study of an ideal lattice of c b l a r hard wall amidots in a low magnetic field where classical skipping orbits can exist" We study the transmission of electrons thmugh constrictions ktween antidots. and thence their paths through the lanice, which cm tahe the form of a correlated random walk. Analytic expressions for the conductivity tensor are derived, and mese give numerical values comparable with recent expenmenu.'

Densification effects of the carbon nanotube pillar array on field-emission properties

“…This is attributed to the growth scheme of CNTs via the codeposited catalyst metals. 5) The densification behavior is attributed to the lateral forces resulting from the capillary meniscus interaction. 14) The critical densification size is determined by a balance between the elastic modulus of CNT and the capillary forces during densification.…”

“…28) Moreover, the densification also increases the thermal conductivity [29][30][31] and mechanical stiffness 21,32) of CNT pillars. Therefore, the better adhesion 5) and mechanical stiffness of CNT pillars make the CNTs resistant to being pulled out by strong electric force. Moreover, the higher thermal conductivity can protect the CNTs from being burned out owing to joule heat at a high current density.…”

“…4) Despite the well-known attractive properties of CNTs, there are still several problems in terms of microstructure uniformity, high current density, and long-term stability for FE applications. 5) For example, the high resistance of emitters will degrade FE properties and long-term stability. 6,7) The presence of high resistance to the emitters results in more joule heating under high FE current density, thereby damaging the emitters.…”