ArticleiScience2025
Field electron emission properties of bulk diamond/expanded graphite composite cathode.
Article in iScience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Diamond exhibits a negative electron affinity potential and a high thermal conductivity. Nevertheless, the elevated surface resistivity of diamond restricts its utilization in cold cathodes. Expanded graphite, an allotrope of diamond, is a material that exhibits high electrical conductivity and is cost-effective to manufacture. The combination of these two elements into a hybrid structure is a highly desirable proposition, as it would facilitate a synergistic approach to field-emitting materials. In this study, diamond-expanded graphite bulk composite cathodes were prepared using the cold pressing method. The results demonstrate that the cathode comprising diamond particles with a diameter of 0.5 μm and a content of 20% exhibits the most favorable electron emission activity. The turn-on field strength (at 1 mA/cm
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