کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
701369 1460820 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-step growth process of carbon nanofiber bundle-ended nanocone structure by microwave plasma chemical vapor deposition
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
One-step growth process of carbon nanofiber bundle-ended nanocone structure by microwave plasma chemical vapor deposition
چکیده انگلیسی

In this work, we report a simple one-step growth process to synthesize a novel and distinct carbon nanostructure, called a carbon nanofiber bundle-ended nanocone (CNFNC) structure, by using microwave plasma chemical vapor deposition (MPCVD) method with CH4 and H2 as source gases and Fe catalyst. The nanostructures and their properties after each processing step were characterized by FESEM, HRTEM, ED, AES, and Raman spectroscopy. The preliminary results have demonstrated that the CNFNC structures exhibit excellent field emission properties. The results also show that the favored conditions to form the CNFNC structures include a combination of lower CH4/H2 flow ratio, higher substrate negative bias, and proper working pressure and deposition time. The possible growth mechanism of the CNFNC structures is proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 15, Issues 11–12, November–December 2006, Pages 1849–1854
نویسندگان
, , ,