کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5427860 1508648 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metamaterial-based perfect absorbers for efficiently enhancing near field radiative heat transfer
ترجمه فارسی عنوان
جذب کامل بر اساس مواد متمرکز برای افزایش موثر انتقال حرارت تابشی در نزدیکی میدان
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
چکیده انگلیسی

The fascinating capability of manipulating light using metamaterials (MMs) has inspired a significant amount of studies of using MMs for energy related applications. In this work we investigate MM-based perfect absorbers for enhancing near field radiative heat transfer, which is described by the fluctuation dissipation theorem. MM structures designed at two wavelengths are analyzed, corresponding to two working temperatures. Both electric and magnetic surface polaritons are found to contribute to heat transfer, while natural materials support only electric polaritons. The near-perfect absorption is demonstrated to be related to the modification of effective optical properties, which is important for enhancing radiative heat transfer efficiently. By comparing different designs, the bandwidth of the heat flux spectrum is found to increase with the absorption bandwidth, which is originated from the spatial field distributions. This study will contribute to the understanding of surface polaritons in near field radiative heat transfer and facilitate the optimization of MMs for near field heat transfer applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 167, December 2015, Pages 156–163