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Richiro Ohta


Click on the titles below to find US government-authored or -collected reports written by Richiro Ohta

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Enhanced Field Emission Properties from Carbon Nanotube Emitters Grown on NiCr Alloy Surfaces with Grain Boundary Effect Apr-2008
Authors:  Setha Yim; Richiro Ohta; Jessie L Killian; Nathaniel B Zuckerman; Emily Allen; Cattien V Nguyen; ELORET CORP MOFFETT FIELD CA NASA AMES RESEARCH CENTER
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.Carbon nanotubes (CNTs) are known to have exceptional field emission properties such as low turn-on voltage and high current density. Nilsson et al. reported that field emission properties depend highly on the density of the CNT films. The CNTs must have low density in order to minimize electrostatic field screening from neighboring nanotubes. At the same time, the CNT films must have a high number of emitting sites to achieve ...


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