Fig. 4: Formation of subsurface large Pt clusters.

Concentration maps taken from 2 nm-thick slices of APT volume of NPG-Pt heated at 300 °C in Ar-H2. Scale bar is 20 nm.

Concentration maps taken from 2 nm-thick slices of APT volume of NPG-Pt heated at 300 °C in Ar-H2. Scale bar is 20 nm.