Fig. 1: Imaging the displacement field of the octahedral Pd nanoparticle.
a Scanning electron microscopy image of an individual Pd nanoparticle, showing the TiO2 layer surrounding the metallic core. The black lines are a guide for the eyes, distinguishing the Pd surface and the titanium dioxide. b Isosurface of the 3D diffraction pattern obtained from the Pd nanoparticle measured under the pristine state \((p_{H_2} = 0)\). c Different views of the reconstructed displacement field for the pristine state nanoparticle shown as an isosurface, colored according to its displacement component along the [111] direction, u111. The black arrow represents the [111] direction of the measurement Q-vector. The scale bars in (a) and (c) represent 100 nm.
