| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
|
| Presentation Title |
Enhanced Field Emission of CNT-W Nanowire Hierarchical Emitters |
| Author(s) |
Narasimha Vinod Pulagara, Gurjinder Kaur, Indranil Lahiri |
| On-Site Speaker (Planned) |
Narasimha Vinod Pulagara |
| Abstract Scope |
Hierarchical structures have good potential for practical field emission applications. These emitter structures help to provide a high current density at low operating voltage and an excellent current stability for long periods. In the present work, hierarchical structures have been prepared by growing carbon nanotubes (CNTs) on W nanowires. W nanowires were synthesized on W foil and CNTs were grown on synthesized W nanowires by chemical vapor deposition (CVD) technique. Tungsten nanowires were chosen to prepare hierarchical field emitter structures because of high mechanical strength, high chemical and thermal stability and large electronic emissivity of W nanowires. Fabricated CNTs/W nanowires were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) characterization techniques to understand their structures and morphologies. These hierarchical structures were used as cathode to evaluate their performance as field emitters. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |