Fig. 10.

(a) Schematic diagram of LBL structure assembling with nano-silica aerogel layer and PCM layer under extreme environments; (b) schematic illustration of the LBL structure tested on a heating/cooling plate; (c) infrared thermography image of summer ground surface; (d) infrared thermography image of the sample on a heating plate at indicated time points; (e) time-temperature curve of heating plate and LBL structure; (f) time-temperature difference curve of heating plate and LBL structure; (g) infrared thermography image of the sample on a cooling plate at indicated time points; (h) time-temperature curve of cooling plate and LBL structure; (i) time-temperature difference curve of cooling plate and LBL structure.