کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785844 1023396 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Model calculation and empirical investigation of enhanced field emission behavior of branched carbon nanostructures
ترجمه فارسی عنوان
محاسبه مدل و تحقیقات تجربی رفتار نشتی ناشی از افزایش نانوساختارهای کربن شاخه ای
کلمات کلیدی
نانوساختارهای کربن شاخه، انتشار میدان، ضریب افزایش میدان
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی

In this paper, we propose the novel branched carbon nanotubes (B-CNTs) as efficient candidate for field emission applications. We believe that the double-stage structure of B-CNTs, beside formation of multiple thin branches at the apex of each vertical CNT, is responsible for the observed enhanced field emission behavior in B-CNTs. In this regard, we have derived an analytical model to evaluate the field enhancement factor (β) of the B-CNTs in comparison with CNTs, as the most popular cathode for field emission applications in the scientific society. The presented model also allows investigating the effect of different structural parameters on the field emission characteristic. We have also, compared the field emission characteristics of the B-CNTs with vertical CNTs experimentally. We observed a β value for B-CNTs which was around three times higher than CNTs. The observed enhancement in the experimental data was in good agreement with the presented analytical model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 14, Issue 8, August 2014, Pages 1092–1098
نویسندگان
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