کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
158373 457005 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interaction between two single-walled carbon nanotubes revisited: Structural stability of nanotube bundles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Interaction between two single-walled carbon nanotubes revisited: Structural stability of nanotube bundles
چکیده انگلیسی

On the basis of the all-atom model, cohesive energies per carbon atom between two single-walled carbon nanotubes (SWNTs) of uniform and different diameters were calculated, and structural stability of SWNT bundles with differing diameters was analyzed. It is found that the cohesive energy per carbon atom exhibits a minimum when the diameter of one tube is a half of that of the other. So we predict that the SWNT bundle formed by two species of tubes with the diameters of DD and D/2D/2 is a novel stable structure. In particular, an energy of 17.44 meV per carbon atom is needed for the separation of a single tube of 2.713 nm from the stable arrangement, while only 15.88 meV per carbon atom for the separation of a single tube of 2.713 nm from the hexagonal array of SWNTs of uniform size, which suggests that the special arrangement structure is more stable than the hexagonal array. It is expected that the calculated cohesive energies per carbon atom may provide valuable information for separation and physical properties of the SWNT bundles with differing diameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 62, Issue 23, December 2007, Pages 6879–6884
نویسندگان
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