中北大学学报（自然科学版）2012，Vol.33Issue(2)：207-210,215,5.DOI:10.3969/j.issn.1673-3193.2012.02.024
石墨烯纳米片电场增强因子的模拟计算与对比
Numerical Simulation of Electric Field Enhancement Factor of Graphene Nanoflake
摘要
Abstract
Graphene nano flake (GNF) features properties of electron emission due to its one-dimensional sharp edge. Field enhancement factor β is an important parameter for emission evaluation, which is usually obtained by F-N curve measurement. In this paper, the field enhancement at the end of a single GNF vertical to the plate was calculated with the software of Electron Beam Simulation (EBS). By polynomial regression and fit of the calculation data, an empirical expression was drawn. The effects of the height and edge curvature of the GNF on β were investigated. The efficient range of the GNF as a good emitter was studied. By comparing the GNT the CNT with the similar size, it was proved feasibility of the proposed model and calculation.关键词
石墨烯纳米片/电场增强因子/数值模拟/场发射Key words
graphene nanoflake/field enhancement factor) numerical simulation/field emission分类
数理科学引用本文复制引用
李智军,张晖,范玉锋,薛河..石墨烯纳米片电场增强因子的模拟计算与对比[J].中北大学学报（自然科学版）,2012,33(2):207-210,215,5.基金项目
国家自然科学基金资助项目(50875207) （50875207）
