@article{TEXTUAL,
      recid = {11763},
      author = {Hurley, Matthew J. and Tanner, Christian P. N. and  Portner, Joshua and Utterback, James K. and Coropceanu,  Igor and Das, Avishek and Slivka, Joseph D. and Fluerasu,  Andrei and Sun, Yanwen and Song, Sanghoon and Hamerlynck,  Leo M. and Miller, Alexander H. and Bhattacharyya,   Priyadarshini and Talapin, Dmitri V. and Williams, Garth J.  and Ginserg, Naomi S. and Teitelbaum, Samuel W.},
      title = {<i>In situ</i> coherent x-ray scattering  reveals polycrystalline structure and discrete annealing  events in strongly coupled nanocrystal superlattices},
      journal = {Physical Review Research},
      address = {2024-05-03},
      number = {TEXTUAL},
      abstract = {Solution-phase bottom up self-assembly of nanocrystals  into superstructures such as ordered superlattices is an  attractive strategy to generate functional materials of  increasing complexity, including very recent advances that  incorporate strong interparticle electronic coupling. While  the self-assembly kinetics in these systems have been  elucidated and related to the product characteristics, the  weak interparticle bonding interactions suggest the  superstructures formed could continue to order within the  solution long after the primary nucleation and growth have  occurred, even though the mechanism of annealing remains to  be elucidated. Here, we use a combination of Bragg coherent  diffractive imaging and x-ray photon correlation  spectroscopy to create real-space maps of supercrystalline  order along with a real-time view of the strain  fluctuations in aging strongly coupled nanocrystal  superlattices while they remain suspended and immobilized  in solution. By combining the results, we deduce that the  self-assembled superstructures are polycrystalline,  initially comprising multiple nucleation sites, and that  shear avalanches at grain boundaries continue to increase  crystallinity long after growth has substantially slowed.  This multimodal approach should be generalizable to  characterize a breadth of materials in situ in their native  chemical environments, thus extending the reach of  high-resolution coherent x-ray characterization to the  benefit of a much wider range of physical systems.},
      url = {http://knowledge.uchicago.edu/record/11763},
}