Optimization for field emission from carbon nanotubes array by Fowler–Nordheim equation |
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| Institution: | 1. Electronic Materials Researches Department, Advanced Technology and New Materials Researches Institute, City of Scientific Researches and Technological Applications, New Borg El-Arab City, Alexandria 21934, Egypt;2. Arab Academy for Science and Technology, and Maritime Transport, Alexandria 21936, Egypt;1. Jiangsu Key Laboratory of Environmental Functional Materials, College of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215009, China;2. Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam-do 356-706, Republic of Korea;1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150080, China;2. The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin 150080, China;3. School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, China;1. INTERA Inc, 9600 Great Hills Trail, Austin, TX 78759, USA;2. Civil and Environmental Engineering Dept., Utah State University, 4110 Old Main Hill, Logan Utah 84322-4110, USA |
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| Abstract: | In order to optimize the field emission from carbon nanotubes (CNTs) array by the emission current density, the calculation of the field emission was extended with the floating sphere model and the Fowler–Nordheim equation, and the trend of the emission current density versus the intertube distance (the distance between the nearest CNTs) was mainly discussed in this paper. Only considering the field enhancement factor in the previous works, the field emission from CNTs array was optimized only by possibly decreasing the intertube distance with the maximal field enhancement factor. Herein, both the field enhancement factor and the emission current density were taken into account, the field emission from CNTs array could be optimized analytically with the intertube distance of 10th of the tube height, which was much smaller than the estimated value and the experiment result. |
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