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Title: Strain-relief by single dislocation loops in calcite crystals grown on self-assembled monolayers

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms11878· OSTI ID:1272105
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  1. University of Leeds, Leeds (United Kingdom)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Univ. College London (United Kingdom)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Most of our knowledge of dislocation-mediated stress relaxation during epitaxial crystal growth comes from the study of inorganic heterostructures. In this study, we use Bragg coherent diffraction imaging to investigate a contrasting system, the epitaxial growth of calcite (CaCO3) crystals on organic self-assembled monolayers, where these are widely used as a model for biomineralization processes. The calcite crystals are imaged to simultaneously visualize the crystal morphology and internal strain fields. Our data reveal that each crystal possesses a single dislocation loop that occupies a common position in every crystal. The loops exhibit entirely different geometries to misfit dislocations generated in conventional epitaxial thin films and are suggested to form in response to the stress field, arising from interfacial defects and the nanoscale roughness of the substrate. In conclusion, this work provides unique insight into how self-assembled monolayers control the growth of inorganic crystals and demonstrates important differences as compared with inorganic substrates.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1272105
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 38 works
Citation information provided by
Web of Science

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Cited By (18)

Droplet Microfluidics XRD Identifies Effective Nucleating Agents for Calcium Carbonate journal March 2019
Amino Acid Assisted Incorporation of Dye Molecules within Calcite Crystals journal June 2018
Super‐Resolution Microscopy Reveals Shape and Distribution of Dislocations in Single‐Crystal Nanocomposites journal November 2019
Amino Acid Assisted Incorporation of Dye Molecules within Calcite Crystals journal June 2018
Super‐Resolution Microscopy Reveals Shape and Distribution of Dislocations in Single‐Crystal Nanocomposites journal November 2019
Three-dimensional X-ray diffraction imaging of dislocations in polycrystalline metals under tensile loading journal September 2018
Oxidation induced strain and defects in magnetite crystals journal February 2019
Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging journal August 2017
Bragg Coherent Diffractive Imaging of Zinc Oxide Acoustic Phonons at Picosecond Timescales journal August 2017
Real-time coherent diffraction inversion using deep generative networks journal November 2018
Synchrotron FTIR mapping of mineralization in a microfluidic device journal January 2017
Visualization of the effect of additives on the nanostructures of individual bio-inspired calcite crystals journal January 2019
Bragg coherent diffraction imaging of iron diffusion into gold nanocrystals journal November 2018
Nanoscale imaging of the full strain tensor of specific dislocations extracted from a bulk sample journal January 2020
Dynamic diffraction artefacts in Bragg coherent diffractive imaging journal February 2018
Nano-scale imaging of the full strain tensor of specific dislocations extracted from a bulk sample text January 2019
Stability Limits and Surface Chemistry of Ag Nanoparticles in Non-Adsorbing Electrolytes Probed by Bragg Coherent Diffractive Imaging preprint January 2016
Real-time coherent diffraction inversion using deep generative networks text January 2018


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