@article{620e413df5154aa781449f2692930ea0,
title = "Single-particle mapping of nonequilibrium nanocrystal transformations",
abstract = "Chemists have developed mechanistic insight into numerous chemical reactions by thoroughly characterizing nonequilibrium species. Although methods to probe these processes are well established for molecules, analogous techniques for understanding intermediate structures in nanomaterials have been lacking. We monitor the shape evolution of individual anisotropic gold nanostructures as they are oxidatively etched in a graphene liquid cell with a controlled redox environment. Short-lived, nonequilibrium nanocrystals are observed, structurally analyzed, and rationalized through Monte Carlo simulations. Understanding these reaction trajectories provides important fundamental insight connecting high-energy nanocrystal morphologies to the development of kinetically stabilized surface features and demonstrates the importance of developing tools capable of probing short-lived nanoscale species at the single-particle level.",
author = "Xingchen Ye and Jones, {Matthew R.} and Frechette, {Layne B.} and Qian Chen and Powers, {Alexander S.} and Peter Ercius and Gabriel Dunn and Rotskoff, {Grant M.} and Nguyen, {Son C.} and Adiga, {Vivekananda P.} and Alex Zettl and Eran Rabani and Geissler, {Phillip L.} and Alivisatos, {A. Paul}",
note = "Funding Information: This work was supported in part by the King Abdulaziz City for Science and Technology (KACST), Kingdom of Saudi Arabia, which provided for nanocrystal synthesis; the Defense Threat Reduction Agency (DTRA) under award HDTRA1-13-1-0035, which provided for nanocrystal etching, postdoctoral support, and TEM instrumentation; the NSF-BSF International Collaboration in Chemistry program, NSF grant CHE-1416161 and BSF grant 2013/604, which provided for computational resources; and the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division of the U.S. Department of Energy under contract DE-AC02-05CH11231 within the sp2-bonded Materials Program (KC2207), which provided for graphene growth, cell fabrication, and student support. This work made use of the Molecular Foundry, Lawrence Berkeley National Laboratory, which is supported by the U.S. Department of Energy under contract DE-AC02-05CH11231. Q.C. was supported by a Miller fellowship from Miller Institute for Basic Research in Science at UC Berkeley. G.M.R. acknowledges the NSF for a Graduate Research Fellowship. M.R.J. acknowledges the Arnold and Mabel Beckman Foundation for a postdoctoral fellowship. Publisher Copyright: Copyright {\textcopyright} 2016 by the American Association for the Advancement of Science; all rights reserved.",
year = "2016",
month = nov,
day = "18",
doi = "10.1126/science.aah4434",
language = "English (US)",
volume = "354",
pages = "874--877",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6314",
}