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We demonstrated field emission properties of a CNT point emitter fabricated by using CNTs on a graphite rod. The emitter has the highest current of 6.3 mA; the corresponding current density is 1.6 A/cm2. The emitter is stable at a current of 0.1 mA for 20 hours. It also showed a small and uniform emission pattern at the phosphor coated ITO glass. Our point emitter could be a good candidate for X-ray...
We present field emission properties of CNT point emitters fabricated by a unique method. The CNT point emitters exhibited high emission current up to 2.3 mA at the electric field of 1.6 V/µm and excellent emission stability during 24 h. Moreover, emission pattern showed a very low spreading angle of emitted electrons at the anode electrode. The high emission performance was attributed to the well-focused...
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