کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1789203 | 1023495 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Elongation of vertically well-aligned carbon nanofiber bundles and their field emission characteristics
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Carbon nanofiber bundles were vertically well-grown on a nickel-coated silicon substrate from the microwave plasma-enhanced chemical vapor deposition under the application of high negative bias voltage. The formation of carbon nanofiber bundles was systematically investigated as a function of the reaction time. At the initial stage of the reaction, many submicrometer-sized grains having bamboo sprout-like shape were developed. Carbon nanofiber bundles formation was initiated at the top position of each bamboo sprout-like shaped grains. Subsequent carbonization reaction produced longer and thicker carbon nanofiber bundles. Each carbon nanofiber bundle was composed of several tens nanometer-sized individual carbon nanofiber. The elongation of carbon nanofiber bundles seemed to result from the continuous supply of nickel catalyst from the bamboo sprout-like shaped grains and carbon components from CH4 gas. Turn-on voltage of the field emission was measured around 0.8 V/μm. Fowler-Nordheim plot of the measured values confirmed the field emission characteristic of the measured current.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 6, Issue 4, July 2006, Pages 766-771
Journal: Current Applied Physics - Volume 6, Issue 4, July 2006, Pages 766-771
نویسندگان
S.-H. Kim, D.U. Kim, S.K. Lee,