Journal Article Fresnel zone plate Research Support, Non-U.S. Gov't AuNi nanocrystals CXDI NiO X-ray lithography X-ray writer backscattered electrons beamline coherent X-ray diffraction imaging direct-write X-ray lithography electrical property four-point probe station hard X-ray focusing high‐Ni cathode materials in situ X-ray diffraction in situ characterization laser irradiation metastable mixed phase morphological characterization multimodal X-ray probe oxidation pore evolution characterization proximity effect rapid Joule heating technique sintering dynamics sintering theory three-dimensional morphology