کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1690672 | 1011271 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Field emission characteristics of an individual carbon nanotube inside a field emission-scanning electron microscope
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
Field emission (FE) properties of individual single-walled carbon nanotubes (SWCNT) were investigated inside a field emission-scanning electron microscopy. The individual SWCNT turned on a voltage of 23Â V defined to produce a current of 10Â pA, and was saturated at around 43Â V and 880Â nA. The FE characteristic of individual SWCNT also followed a conventional Fowler-Nordheim (F-N) theory in which a single linear slope in the F-N plots is measured below their limit of current level corresponding to the saturation regime of emission current. Energy-dispersive X-ray spectroscopy analysis showed that carbon atoms were deposited on the anode surface by the local heating of SWCNT tip during the FE processes and indicated about atomic 83% of carbon atoms. The carbon atoms were newly found to be evaporated and deposited on the anode surface during the FE process such that it was assumed that the degradation of FE was caused by evaporation and deposition of carbon atoms during the FE process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 81, Issue 4, 6 November 2006, Pages 422-426
Journal: Vacuum - Volume 81, Issue 4, 6 November 2006, Pages 422-426
نویسندگان
H.-S. Jang, S.-O. Kang, S.-H. Nahm, Y.-I. Kim, B.-G. Min, D.-H. Kim, H.-R. Lee,