TY - JOUR
T1 - A Mesocrystal-Like Morphology Formed by Classical Polymer-Mediated Crystal Growth
AU - Smeets, Paul J.M.
AU - Cho, Kang Rae
AU - Sommerdijk, Nico A.J.M.
AU - De Yoreo, James J.
N1 - Funding Information:
The authors thank J. Tao for help with confocal Raman microscopy. This research was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. All experiments were performed at the Molecular Foundry, Lawrence Berkeley National Laboratory, which was supported by the Office of Basic Energy Sciences, Scientific User Facilities Division under Contract No. DE-AC02-05CH11231. Further analysis was carried out at Pacific Northwest National Laboratory (PNNL), which is operated by Battelle for the U.S. Department of energy under Contract No. DE-AC05-76RL01830, and at the Eindhoven University of Technology through a VICI grant of the Dutch Science Foundation, NWO, the Netherlands. Two typographical errors and reference 24 were corrected on October 26, 2017, following initial online publication.
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/10/26
Y1 - 2017/10/26
N2 - Growth by oriented assembly of nanoparticles is a widely reported phenomenon for many crystal systems. While often deduced through morphological analyses, direct evidence for this assembly behavior is limited and, in the calcium carbonate (CaCO3) system, has recently been disputed. However, in the absence of a particle-based pathway, the mechanism responsible for the creation of the striking morphologies that appear to consist of subparticles is unclear. Therefore, in situ atomic force microscopy is used to investigate the growth of calcite crystals in solutions containing a polymer additive known for its ability to generate crystal morphologies associated with mesocrystal formation. It is shown that classical growth processes that begin with impurity pinning of atomic steps, leading to stabilization of new step directions, creation of pseudo-facets, and extreme surface roughening, can produce a microscale morphology previously attributed to nonclassical processes of crystal growth by particle assembly.
AB - Growth by oriented assembly of nanoparticles is a widely reported phenomenon for many crystal systems. While often deduced through morphological analyses, direct evidence for this assembly behavior is limited and, in the calcium carbonate (CaCO3) system, has recently been disputed. However, in the absence of a particle-based pathway, the mechanism responsible for the creation of the striking morphologies that appear to consist of subparticles is unclear. Therefore, in situ atomic force microscopy is used to investigate the growth of calcite crystals in solutions containing a polymer additive known for its ability to generate crystal morphologies associated with mesocrystal formation. It is shown that classical growth processes that begin with impurity pinning of atomic steps, leading to stabilization of new step directions, creation of pseudo-facets, and extreme surface roughening, can produce a microscale morphology previously attributed to nonclassical processes of crystal growth by particle assembly.
KW - atomic force microscopy
KW - calcium carbonate
KW - crystal growth
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U2 - 10.1002/adfm.201701658
DO - 10.1002/adfm.201701658
M3 - Article
AN - SCOPUS:85028769227
SN - 1616-301X
VL - 27
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 40
M1 - 1701658
ER -