Curvature-induced and thermal strain in polyhedral gold nanocrystals

Kim, J. W.; Dietze, S. H.; Ulvestad, A.; Fohtung, E.; Shpyrko, O. G.; Manna, S.; Fullerton, E. E.; Harder, R.

doi:10.1063/1.4900866

Title: Curvature-induced and thermal strain in polyhedral gold nanocrystals

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Abstract

We use coherent x-ray diffractive imaging to map the local distribution of strain in gold (Au) polyhedral nanocrystals grown on a silicon (Si) substrate by a single-step thermal chemical vapor deposition process. The lattice strain at the surface of the octahedral nanocrystal agrees well with the predictions of the Young-Laplace equation quantitatively, but exhibits a discrepancy near the nanocrystal-substrate interface. We attribute this discrepancy to the dissimilar interfacial energies between Au/Air and Au/Si and to the difference in thermal expansion between the nanocrystal and the substrate during the cooling process.

Authors:

Kim, J. W.; Dietze, S. H.; Ulvestad, A.; Fohtung, E.; Shpyrko, O. G. ^[1]; Manna, S.; Fullerton, E. E. ^[2]; Harder, R. ^[3]

Department of Physics, University of California-San Diego, La Jolla, California 92093-0319 (United States)
Center for Magnetic Recording Research, University of California-San Diego, La Jolla, California 92093-0401 (United States)
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Publication Date:: Mon Oct 27 00:00:00 EDT 2014

OSTI Identifier:: 22310673

Resource Type:: Journal Article

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 105; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; AIR; CHEMICAL VAPOR DEPOSITION; COOLING; DISTRIBUTION; GOLD; INTERFACES; LAPLACE EQUATION; NANOPARTICLES; NANOSTRUCTURES; SILICON; STRAINS; SUBSTRATES; SURFACES; THERMAL EXPANSION; X RADIATION

Citation Formats


                    Kim, J. W., Dietze, S. H., Ulvestad, A., Fohtung, E., Shpyrko, O. G., Manna, S., Fullerton, E. E., and Harder, R. Curvature-induced and thermal strain in polyhedral gold nanocrystals.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4900866.

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                    Kim, J. W., Dietze, S. H., Ulvestad, A., Fohtung, E., Shpyrko, O. G., Manna, S., Fullerton, E. E., & Harder, R. Curvature-induced and thermal strain in polyhedral gold nanocrystals.  United States.  https://doi.org/10.1063/1.4900866

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                    Kim, J. W., Dietze, S. H., Ulvestad, A., Fohtung, E., Shpyrko, O. G., Manna, S., Fullerton, E. E., and Harder, R. 2014.  
        "Curvature-induced and thermal strain in polyhedral gold nanocrystals".  United States.  https://doi.org/10.1063/1.4900866.

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@article{osti_22310673,

  title        = {Curvature-induced and thermal strain in polyhedral gold nanocrystals},

  author       = {Kim, J. W. and Dietze, S. H. and Ulvestad, A. and Fohtung, E. and Shpyrko, O. G. and Manna, S. and Fullerton, E. E. and Harder, R.},

  abstractNote = {We use coherent x-ray diffractive imaging to map the local distribution of strain in gold (Au) polyhedral nanocrystals grown on a silicon (Si) substrate by a single-step thermal chemical vapor deposition process. The lattice strain at the surface of the octahedral nanocrystal agrees well with the predictions of the Young-Laplace equation quantitatively, but exhibits a discrepancy near the nanocrystal-substrate interface. We attribute this discrepancy to the dissimilar interfacial energies between Au/Air and Au/Si and to the difference in thermal expansion between the nanocrystal and the substrate during the cooling process.},

  doi          = {10.1063/1.4900866},

  url          = {https://www.osti.gov/biblio/22310673},
  journal      = {Applied Physics Letters},

  issn         = {0003-6951},

  number       = 17,

  volume       = 105,

  place        = {United States},

  year         = {Mon Oct 27 00:00:00 EDT 2014},

  month        = {Mon Oct 27 00:00:00 EDT 2014}

}

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