کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9697472 | 1460824 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Density-controlled carbon nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
We demonstrate that the field emission efficiency was greatly improved by reducing the density of carbon nanotubes (CNTs). In this study, catalyst composed of gold and nickel was deposited by e-gun evaporation before pre-treatment of furnace annealing. Carbon nanotubes were then grown on silicon substrate using bias-assisted microwave plasma chemical vapor deposition. Vertical aligned carbon nanotubes were grown with gas mixture of methane and hydrogen under external DC bias. The surface morphology and the tubular structure of carbon nanotubes were confirmed by electron microscopy and the density of carbon nanotubes could be controlled by the composition of the catalyst. The field emission properties were investigated through I-V measurement and the effects are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 14, Issues 3â7, MarchâJuly 2005, Pages 739-743
Journal: Diamond and Related Materials - Volume 14, Issues 3â7, MarchâJuly 2005, Pages 739-743
نویسندگان
Cheng Hang Hsu, Chia-Fu Chen, Chien-Chung Chen, Shih-Yu Chan,