The influence of the arrangement and spacing of CNT column array on the characteristic of field emission

Han, Kyusung; Jun, Dohan; Hong, Nguyen Tuan; Lee, Sooonil; Yang, Sangsik

doi:10.1117/12.842887

Cited by 2 publications

(1 citation statement)

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“…The shape, dimensions, and layout of the columns are set on the basis of the previous research result. 19,20) The top substrate consists of an anode, a repel electrode, and two acceleration electrodes. The repel and the acceleration electrodes form a space for the ion flight path between the two substrates.…”

Section: Device Structure and Simulationmentioning

confidence: 99%

Field Emission Ion Source Using a Carbon Nanotube Array for Micro Time-of-Flight Mass Spectrometer

Han

Lee

Jun

et al. 2011

Jpn. J. Appl. Phys.

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In this paper, we present the fabrication and test of a carbon-nanotube (CNT)-based field emission ion source for a micro time-of-flight mass spectrometer (-TOF MS). The -TOF MS is composed of two parts, i.e., a field emission ion source and a mass analyzer. Molecules are ionized by the impact of electrons emitted from CNTs. We calculated the ion beam path using a commercial electrodynamics simulation tool (Simion ver. 7). The results of the ion beam path simulation show that the ions generated in the effective ionization region can pass only between the first acceleration electrode pair. We fabricated a CNT-based field emission ion source for the -TOF MS. The electron current of the field emitter and the ion current of the ion source were measured. Through the characteristic test of a field emission ion source, we confirmed that the fabricated ion source is feasible for the -TOF MS. #

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Section: Device Structure and Simulationmentioning

confidence: 99%