کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5386006 | 1505023 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Horizontal single-walled carbon nanotubes on MgO(1Â 1Â 0) and MgO(0Â 0Â 1) substrates
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
⺠Preferential alignment of carbon nanotubes along the [11¯0] direction of the MgO(1 1 0) surface. ⺠Dense alignment of carbon nanotubes along the two orthogonal [1 1 0] and [11¯0] directions of the MgO(0 0 1) surface. ⺠Distribution of the SWNT diameters grown on MgO(1 1 0) is generally found more narrower than that of SWNT grown on MgO(0 0 1) in the same synthesis conditions. This difference is attributed to the surface energy of MgO(1 1 0) which is twice larger than the one of MgO(0 0 1). Large surface energy would reduce the mobility of Co self-assembled nanoparticles and thus merging between neighbour particles. ⺠For synthesis at 830 °C, the distribution of the radial breathing mode frequencies of SWNT grown on MgO(1 1 0) is remarkably centered around 142 and 168 cmâ1, corresponding to diameters of 1.75 and 1.45 nm. From Kataura plot these SWNTs are semi-conducting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics Letters - Volume 495, Issues 1â3, 29 July 2010, Pages 96-101
Journal: Chemical Physics Letters - Volume 495, Issues 1â3, 29 July 2010, Pages 96-101
نویسندگان
Mireille Maret, Bernadette Saubat, Johanna Flock, Arnaud Mantoux, Frédéric Charlot, Denys Makarov,