Kan, JungHo Shin, Dong Hoon Yun, Ki Nam Masud, Felisita Annisanti Lee, Cheol Jin Kim, Myung Jong 2024-01-20T08:32:18Z 2024-01-20T08:32:18Z 2022-01-10 2014-11 0008-6223 https://pubs.kist.re.kr/handle/201004/126156 We demonstrate a very efficient synthesis of vertically-aligned ultra-long carbon nanofibers (CNFs) with sharp tip ends using thermal chemical vapor deposition. Millimeter-scale CNFs with a diameter of less than 50 nm are readily grown on palladium thin film deposited Al2O3 substrate, which activate the conical stacking of graphitic platelets. The field emission performance of the as-grown CNFs is better than that of previous CNFs due to their extremely high aspect ratio and sharp tip angle. The CNF array gives the turn-on electric field of 0.9 V/mu m, the maximum emission current density of 6.3 mA/cm(2) at 2V/mu m, and the field enhancement factor of 2585. (C) 2014 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD NANOTUBES NANOPARTICLES PALLADIUM DECOMPOSITION NUCLEATION DIFFUSION MECHANISM ETHYLENE ARRAYS Super growth of vertically-aligned carbon nanofibers and their field emission properties Article 10.1016/j.carbon.2014.07.054 1 CARBON, v.79, pp.149 - 155 CARBON 79 149 155 scie scopus 000342657100015 2-s2.0-84920576733 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article NANOTUBES NANOPARTICLES PALLADIUM DECOMPOSITION NUCLEATION DIFFUSION MECHANISM ETHYLENE ARRAYS carbon nanofiber super growth field emission