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Colors are available on-line. Total heat transfer coefficient at high doping level: . Dot black curve: total heat transfer coefficient. Red triangles curve: s-polarization evanescent waves contribution. Blue square curve: p-polarization evanescent waves contribution. The temperature is .
Colors are available on-line. Ratio in the plane . Doping concentration is . The two lines result from the coupling of SPP on both interfaces. The lines coincide with the dispersion relation of the SPP for the two interfaces system. The gap is and the temperature is .
Colors are available on-line. Comparison between the closed-from expression (plain line) of and the exact numerical integration (symbols). (a) Dependance on doping at . (b) Dependance on temperature for three doping concentrations.
Colors are available on-line. Evolution of with temperature and doping level. is maximal for temperature and doping level .
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