کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7961374 1513930 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of a grain boundary loop on the thermal conductivity of graphene: A molecular dynamics study
ترجمه فارسی عنوان
اثرات یک حلقه مرزی دانه بر هدایت حرارتی گرافن: مطالعه دینامیکی مولکولی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
Thermal transport in graphene with one type of grain boundary loop was investigated using non-equilibrium molecular dynamics simulation method. The results showed that thermal conductivity is very sensitive to defect concentration. It rapidly decreases in the presence of a defect. This is attributed the phonon defects scattering which shorten the phonon mean free paths leading to the reduction in thermal conductivity. Furthermore, temperature dependency of thermal conductivity of pristine and defected graphene was determined. The results indicated that thermal conductivity of defect-free graphene varies significantly with temperature, while thermal conductivity of graphene with defect remains nearly invariant with the temperature of the system. This implies the possibility of phonon-defect scattering domination over Umklapp phonon-phonon scattering in graphene with defect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 79, November 2013, Pages 132-135
نویسندگان
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