Field emission signature of pentagons at carbon nanotube caps
作者： Mohammad Khazaei , Kenneth A. Dean , Amir A. Farajian , Yoshiyuki Kawazoe
DOI: 10.1021/JP068491I
关键词: Nanotube 、 Materials science 、 Field electron emission 、 Quantum tunnelling 、 Pentagon 、 Atomic physics 、 Characterization (materials science) 、 Signature (logic) 、 Carbon nanotube
摘要: Localization of emitting states and their tunneling probabilities cause the nanotube cap geometry to have decisive impact on field emission patterns currents. We show how different arrangements pentagon rings at tip can create specific features, utilizing a method based first principles calculations. The results give an explanation for observed in experiments, provide feasible way distinguish structures from experimental results. A set general rules is deduced infer configuration through patterns. calculations agree very well with our results, are fundamental interest characterization design carbon emitters probes.
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