Utilizing BCDI to understand finite size effect of AuNP and PdNP on self-organization of gas bubble superlattice

This proposal aims to utilize Bragg coherent diffraction imaging (BCDI) at the ID01 beamline to understand the mechanism for self-organization of gas bubbles into superlattices in selected metals. The proposed nanoscale level elucidation of Gas Bubble Superlattice (GBS) formed in model systems such as Au and Pd nano and microcrystals will help elucidate the effect of finite size on GBS formation mechanism. We will use 3D coherent x-ray diffraction patterns to image GBS structures and gain quantitative information on the noble gas bubbles in GBS, such as a change in lattice parameter and strain-induced in gold nanoparticles (AuNP) and palladium nanoparticles (PdNP) of different sizes. In addition, we will compare the effect of radiation flux, fluence, and temperature on the formation mechanism and structure of GBSs within bulk gold with AuNP. Such a systematic study using model systems such as Au and Pd NP will unravel the role of finite size of NPs on the formation mechanism of GBS.