Structure, optical performance, and thermal performance of the designed device. (IMAGE)
Caption
(a) Schematic illustration of the device on the cooling and heating mode switching with temperature change. (b) Optical photographs of the device. (c) A Schematic of the designed sandwiched structure. (d) The cross-section scanning electron microscopic image of the one-dimensional photonic crystal. (e) The measured optical spectrum of the device on the cooling (blue line) and heating (red line) mode. (f) The optical and infrared photographs on the cooling and heating modes.
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