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Growth and Field‐Emission Properties of Crystalline, Thin‐Walled Carbon Microtubes
Author(s) -
Hu J. Q.,
Bando Y.,
Xu F. F.,
Li Y. B.,
Zhan J. H.,
Xu J. Y.,
Golberg D.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200306193
Subject(s) - materials science , carbon fibers , field electron emission , thin film , thermal , nanotechnology , composite material , chemical engineering , composite number , physics , quantum mechanics , meteorology , engineering , electron
A crystalline graphitic structure—uniform diameter, thin‐walled carbon microtubes (see Figure)—has been prepared via a thermal reaction between ZnS and activated carbon. The microtubes have outer diameters of ∼ 1–2 μm, wall thicknesses of 10–20 nm, and lengths from several hundreds of micrometers to millimeters. The field‐emission turn‐on of the carbon microtubes is as low as ∼ 1.0–1.3 V μm –1 .
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