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|Type:||Artigo de periódico|
|Title:||Growth And Characterization Of Carbon Nanofibers By A Technique Of Polymer Doped Catalyst And Hot-filament Chemical Vapor Deposition|
|Abstract:||Carbon nanostructures have been prepared from the catalytic conversion of polyethylene glycol using a rapid immersion in hot-filament system fed with ethanol, hydrogen and argon. Fiber structures of external diameter about 30 nm have been observed by field emission scanning electron microscopy (FESEM). Raman measurements indicate high degree of C-C sp2 ordering which suggests that the samples correspond to CNTs of good tube crystallinity. The samples presented remarkable field emission properties. Lowest threshold field achieved for electron emission was 1.0 V/μm. © 2008 Elsevier Ltd. All rights reserved.|
|Citation:||Vacuum. , v. 83, n. 2, p. 273 - 275, 2008.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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