Extended Data Fig. 8: Annealing a hcp PdHx nanoparticle.
From: Metastable hexagonal close-packed palladium hydride in liquid cell TEM
a, Ex situ HR-TEM images and corresponding FFTs of a nanoparticle as synthesized at room temperature (RT) and after being annealed at 500 °C for 2 h. The hcp PdHx nanoparticle maintained its crystal structure and interplanar distances even after heat treatment. Images were acquired with two different zone axes for a single particle to confirm the hcp structure. b, Tilting a particle initially aligned along the [\overline{2}110] axis by 30° around an axis along the [0002] direction reoriented it to alignment along the [0\overline{1}10] axis, as expected in the Kikuchi pattern of hcp with c/a = 1.65. Scale bar, 2 nm. ZA, zone axis.
