Three false-color images showing a circular heat pattern expanding outward through tantalum nitride at 0.1, 1, and 10 picoseconds after a light pulse, progressing from red at the center to blue at the edges.
H-Lab/UCLA
A sequence showing how thermal energy, carried by electrons, spreads through theta-phase tantalum nitride after the metallic material is struck by a pulse of light, from 0.1 to 10 picoseconds.