We show that there is no contradiction between the results presented by Pan [Opt. Lett. 25, 369(2000)] and the dependence of the radiative energy flux between two half-spaces separated by a small vacuum gap of width obtained by Polder and Van Hove [Phys. Rev. B 4, 3303 (1971) ] and by Loomis and Maris [Phys. Rev. B 50, 18517 (1994)].
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