Field electron emission from nanotube carbon layers grown by CVD process

CVD growth of carbon nanotubes directly on nickel substrate

“…Potential technical applications in the areas of molecular electronic devices [2][3][4][5][6], nanocomposites [7][8][9][10], electron field emission [11][12][13][14][15] have been proposed or explored. In addition, because of the nature of their structure and chemical bonding, carbon nanotubes 2 are also interesting 1D host materials for lithium intercalation, and several groups have already investigated the application of carbon nanotubes as the anode for lithium batteries [16][17][18][19][20].…”

Carbon Nanotube Field Emitters

“…E. F.Kukovitsky team of the Kazan Physics-Technical Institute (Russia) developed the technology of synthesis of oriented nanotubes with conical layers (Fig. 3) (Musatov et al, 2001;Kukovitsky et al, 2003). The first stage of the process involves polyethylene pyrolysis in the first oven at a temperature of 600 •C.…”

“…High-resolution electron microscope image of nanotubes with conical layers. Graphene layers are marked by arrows with points, and the CNT growth direction is marked by large arrows (Musatov et al, 2001).…”

Field enhancement factor and field emission from a hemi-ellipsoidal metallic needle

“…Various theoretical approaches based on both analytical solutions and numerical simulations have been reported. [18][19][20][21][22][23][24] Analytical solution was obtained for a hemisphere on a plane, a floating sphere at the emitter-plane; a hemi-ellipsoid on a plane [18], and a sphere-on-cone model [19]. Usu- * Electronic address: azhbanov@gate.sinica.edu.tw ally only the apex field enhancement factor is calculated when dealing with a hemi-ellipsoid on a plane [18].…”

“…Influence of the anode-cathode distance within a floating sphere model was investigated in [20]. The model of a hemisphere on a post for CNT emitters was used in numerically simulations and reported in many papers [21][22][23][24]. Calculation difficulties in these numerical methods arise due to the large nanotube aspect ratio and very long distance between cathode and anode in comparison with emitter height.…”