Field emission properties of Ag/SiO2/carbon nanotube films by pulsed voltage co-electrophoretic deposition

Electrophoretic deposition of biomaterials

“…Layered CNT/SiO 2 porous composites were obtained by sequential EPD experiments, alternating the deposition of CNTs and SiO 2 nanoparticles. Related developments were carried out by Wang & Huang (2008), who demonstrated the fabrication of novel Ag/SiO 2 /CNT composites by pulsed voltage electrophoretic codeposition.…”

Electrophoretic deposition of carbon nanotube–ceramic nanocomposites

“…The pulsed plating parameters, controlled by applying 35 V for 1 s and −0.1 V for 1 ms, were found to be the optimum parameters for depositing films that exhibited microstructures and possessed field emission properties. 55 Fig. 4 shows cross-sectional SEM micrographs of a CNT/Ag/SiO 2 composite film prepared by constant voltage and pulsed voltage conditions, showing also the results of EDS analysis.…”

“…For this application, novel Ag/SiO 2 /CNT composite films have been produced by pulsed voltage electrophoretic co-deposition. 55 Multiwalled CNTs were suspended in a mixture of isopropyl alcohol and ethanol containing SiO 2 and Ag particles of average particle size 1.55 and 0.9 m, respectively. CNTs, Ag and SiO 2 powder in the weight percentage ratio of 20:30:50 were dispersed in a isopropyl alcohol and ethanol mixed solution in the volume ratio of 3:1.…”

Research and Application of CNT Composite Electroplating

“…It is confirmed that there are abundant covalent bond functional groups on the pretreated CNTs. Besides the chemical pretreatment, adding additive such as ethanol [24], Polyacrylic acid(PA5000), n-pentanol [25], Dodecyl sulfonic acid sodium, tetrahydrofuran (THF) [26][27][28], dimethly formamide (DMF) [29,30] and deionised water with pyrrole [46,47] is an another effective way to raise the CNT dispersion degree in plating bath. In this study, As a conventional bright additive, the molecular weight of 5,000 polyacrylic acid (PA) was added to disperse the CNTs.…”

“…CNT field emission cold cathodes have a potential to be applied to emission devices which include flat panel field emission displays, cathode ray tubes, backlights for liquid crystal displays, outdoor displays and traffic signals [37][38][39][40].In order to function as good field emitters, CNTs should have good crystallinity, a clean surface, and good electrical contact with the substrate. Considerable effort has been made to develop various methods in fabricating CNT field emitters [41][42][43][44][45][46][47].These methods can be categorized into two fundamental types -direct growth and the screen-printing. Each method has certain advantages and disadvantages.…”