Near-Field Thermal Radiation Between Homogeneous Dual Uniaxial Electromagnetic Metamaterials Recently, near-field thermal radiation has attracted much attention in several fields since it can exceed the Planck blackbody limit through the coupling of evanescent waves. In this work, near-field radiative heat transfer between two semi-infinite dual uniaxial electromagnetic metamaterials with two different material property sets is theoretically analyzed. The near-field radiative heat transfer is calculated using fluctuational electrodynamics incorporated with anisotropic wave optics. The underlying mechanisms, namely, magnetic hyperbolic mode, magnetic surface polariton, electrical hyperbolic mode, and electrical surface polariton, between two homogeneous dual uniaxial electromagnetic metamaterials are investigated by examining the transmission coefficient and the spectral heat flux. The effect of vacuum gap distance is also studied, which shows that the enhancement at smaller vacuum gap is mainly due to hyperbolic mode and surface plasmon polariton modes. In addition, the results show that the contribution of s-polarized waves is significant and should not be excluded due to the strong magnetic response regardless of vacuum gap distances. The fundamental understanding and insights obtained here will facilitate the finding and application of novel materials for near-field thermal radiation.
]]>autChang, Jui-YungautBasu, SoumyadiptaautYang, YueautWang, LipingctbIra A. Fulton Schools of EngineeringengThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Journal of Applied Physics and may be found at http://aip.scitation.org/doi/10.1063/1.4953253.Chang, J., Basu, S., Yang, Y., & Wang, L. (2016). Near-field thermal radiation between homogeneous dual uniaxial electromagnetic metamaterials. Journal of Applied Physics, 119(21), 213108. doi:10.1063/1.4953253
]]>10.1063/1.49532530021-89791089-7550https://hdl.handle.net/2286/R.I.45268009 pages115035968211638899370128035mogborn1In Copyright2016-06-07Text