Fig. 2
Images and temperature maps from high-speed microscopy video. a Series of snapshots of burning flame front. Labeled on the left-top corner is the time after flame front entering the zone (512 µm × 512 µm). b The corresponding flame temperature maps and the average temperature (in Kelvin). High error points were marked as brown and are excluded from the calculations. c The mean (square marker) and median (round marker) flame temperature with time (with reference lines). d Schematic showing reactive sintering and its spatiotemporal relationship to reaction propagation. Note: The propagation direction is from right to left
