Fig. 1

Imaging setup and example outputs. a Schematic showing high-speed microscope imaging of three-dimensionally (3D) printed reactive materials. Read from right to left: b High-speed color video snapshot of reaction front; c corresponding temperature map of reaction front; d temperature map within a single particle; and e the same particle in scanning electron microscopy (SEM) with its energy-dispersive spectrometry (EDS) map. CAD file of microscope objective courtesy of ThorLabs