کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1534970 1512609 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Near-field radiative heat transfer for Si based metamaterials
ترجمه فارسی عنوان
انتقال گرما تابشی نزدیک به میدان برای مواد متخلخل سی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی


• We study near field radiative heat transfer for two doped Si based metamaterials: Si nanowire arrays and Si nanohole arrays.
• Photon local density of states is investigated based on the fluctuational electrodynamics and effective medium theory.
• The near-field thermal radiation of these two Si based metamaterials is dominated by the direct photon absorption due to the induced dipoles in Si, but not by the coupled surface polariton wave or the hyperbolic metamaterial characteristics.

Radiative heat transfer in the near field can exceed the blackbody radiation limit by orders of magnitude due to energy transfer through evanescent waves. Doped Si has attracted significant attention in studies of near field thermal radiation, since it is a Drude-type material whose plasma frequency can be tuned into the infrared range by modifying the dopant concentration. Thus, doped Si can serve as a “tunable metal” which can be used to design tunable metamaterials to control near field thermal radiation. In this paper, we study near field radiative heat transfer for two doped Si based metamaterials: Si nanowire arrays and Si nanohole arrays, using fluctuational electrodynamics and effective medium theory.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 314, 1 March 2014, Pages 57–65
نویسندگان
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