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Abstract
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| The properties and efficiency of the emission current density produced by a metallic array of pyramidal structures are investigated. The theoretical results obtained by numerical integration of the corresponding Laplace equation using a finite differences scheme offer useful information for the optimization of field emission devices based on cathodes with this geometry. Our study shows that the inter-pyramidal distance strongly affects the current density, and even more important for this issue is the protrusion characteristics of these structures. Another relevant, although less important, parameter determining this density is the anode¿cathode distance. The effect of the array characteristics on the maximum local electric field intensity is also discussed. | |
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International
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Si |
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JCR
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Si |
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Title
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JOURNAL OF PHYSICS D-APPLIED PHYSICS |
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ISBN
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0022-3727 |
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Impact factor JCR
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2,104 |
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Impact info
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Volume
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42 |
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10.1088/0022-3727/42/19/195303 |
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Journal number
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19 |
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From page
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195303-1 |
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To page
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195303-6 |
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Month
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OCTUBRE |
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Ranking
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