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Figure 4
(a) Schematics of heat-flow directions in the model of a sample with gold nanospheres dispersed with a 1 µm gap between 5 µm-thick kapton sheets. The blue arrows denote the direction of the X-ray beam. The red line denotes the temperature distribution in the sample. The outer boundary points are labeled with 1 and the points at the interfaces of the material are labeled with 2. (b) Temperature dynamics of the thermal loss coefficient for the surface with emissivity ≃ 0.2 marked by triangle symbols, the convection coefficient [equation (5)[link] in the text] marked by circles, and the combined (convection + thermal radiation loss) coefficient marked by a solid line. (c) Same as (b), with ≃ 0.9.

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