Fig. 1: Time-dependent X-ray holographic imaging of VO2.
From: Ultrafast X-ray imaging of the light-induced phase transition in VO2
a, False colour composite FTH image of VO2 from images recorded on the VO2 soft X-ray resonance (bottom) at 517 eV (red), 529.5 eV (blue) and 531.25 eV (green). The metallic R phase appears green and insulating M1 phase appears purple. b, Temperature-dependent domain growth highlighted through the subtraction of the blue and green channels, Δs, which removes the sample morphology. The region of interest used is indicated by the white dotted region in a. c, Transmission dynamics of two line-outs spanning R regions surrounded by the M1 phase. Their positions are indicated in a and colour-coded. The domain structure, initially ~50 nm, is promptly lost. Background is shaded according to state of the material as a guide to the eye.
