Figure 2 | Scientific Reports

Figure 2

From: Kirchhoff’s metasurfaces towards efficient photo-thermal energy conversion

Figure 2

Schematic illustrations of the infrared spectral region measurement setups employed in this work. (a) Principle of a FT-IR measurement of thermal radiation; MCT is the mercury cadmium telluride IR detector. (b) Setup used for photo-thermal conversion measurements. A broadband tungsten thermal emitter, with a Si filter to block visible wavelength emission, was used as a thermal radiation source.

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