Open AccessRoom temperature fabrication of 1D carbon-copper composite nanostructures directly on Cu substrate and their field emission properties
Author(s) -
Mohamad Saufi Rosmi,
Yazid Yaakob,
Mohd Zamri Mohd Yusop,
Subash Sharma,
Zurita Zulkifli,
Aizuddin Supee,
Golap Kalita,
Masaki Tanemura
Publication year - 2016
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4962971
Subject(s) - nanoneedle , field electron emission , materials science , copper , substrate (aquarium) , composite number , nanostructure , carbon fibers , irradiation , nanotechnology , fabrication , chemical engineering , composite material , optoelectronics , metallurgy , electron , nuclear physics , medicine , oceanography , physics , alternative medicine , pathology , quantum mechanics , geology , engineering
This paper demonstrates a carbon-copper (C-Cu) composite nanostructure directly fabricated on a copper (Cu) substrate using the Ar+ ion irradiation method at room temperature. The morphology of C-Cu composite was controlled by a simultaneous carbon supply during ion irradiation. Conical protrusions formed on the surface of the Cu substrate with the low carbon supply rate (RC), whereas high RC area prominently produced nanoneedle structures. The field electron emission (FEE) tests demonstrated significant improvement between conical protrusions and nanoneedle structures, where the emission current increase from 5.70 μAcm−2 to 4.37 mAcm-2, while the turn-on field reduced from 5.90 to 2.00 Vμm−1
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