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Rounding of Au nano-crystals supported on sapphire at high temperatures

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Abstract

We report the rounding of the crystal facets of Au nanoparticles on a sapphire substrate during thermal annealing at high temperatures. As the annealing temperature was increased over 800 °C, the stable top (111) facet of Au-NPs of about 200 nm in size was surrounded by rounded rough regions and disappeared completely at 900 °C. The transformation temperature, above which faceted nano-crystals became round, decreased as the size of the nano-crystals decreased. The alignment in the crystal orientation was lost when the crystal became rounded, indicating weakening of the interaction between the nano-crystals and the substrate.

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References

  1. Q. Li and G. T. Wang, Appl. Phys. Lett. 93, 043119 (2008).

    Article  ADS  Google Scholar 

  2. I. S. Lee, N. Lee, J. Park, B. H. Kim, Y. W. Yi, T. Kim, T. K. Kim, I. H. Lee, S. R. Paik and T. Hyeon, J. Am. Chem. Soc. 128, 10658 (2006).

    Article  Google Scholar 

  3. T. Hyeon, Chem. Commun. 927 (2003).

  4. D. A. Giljohann, D. S. Seferos, W. L. Daniel, M. D. Massich, P. C. Patel and C. A. Mirkin, Angew. Chem. Int. Ed. 49, 3280 (2010).

    Article  Google Scholar 

  5. J. C. Heyraud and J. J. Metois, J. Cryst. Growth. 50, 571 (1980).

    Article  ADS  Google Scholar 

  6. J. C. Heyraud and J. J. Metois, Acta. Metal. 28, 1789 (1980).

    Article  Google Scholar 

  7. J. C. Heyraud and J. J. Metois, Surf. Sci. 128, 334 (1983).

    Article  ADS  Google Scholar 

  8. J. C. Heyraud and J. J. Metois, Surf. Sci. 177, 213 (1986).

    Article  ADS  Google Scholar 

  9. P. R. Gadkari, A. P. Warren, R. M. Todi, R. V. Petrova and K. R. Coffey, J. Vac. Sci. Technol. A 23, 1152 (2005).

    Article  ADS  Google Scholar 

  10. J. Y. Kwon, T. S. Yoon, K. B. Kim and S. H. Min, J. Appl. Phys. 93, 3270 (2003).

    Article  ADS  Google Scholar 

  11. H. Sadan and W. D. Kaplan, J. Mater. Sci. 41, 5099 (2006).

    Article  ADS  Google Scholar 

  12. P. R. Miceli and C. J. Palmstrom, Phys. Rev. B 51, 5506 (1995).

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Schools of Materials Science and Engineering & Department of Physics, Gwangju Institute of Science and Technology, Gwangju, 500-712, Korea

    Jae Sung Hwang & Do Young Noh

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  1. Jae Sung Hwang
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  2. Do Young Noh
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Correspondence to Do Young Noh.

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Hwang, J.S., Noh, D.Y. Rounding of Au nano-crystals supported on sapphire at high temperatures. Journal of the Korean Physical Society 62, 6–9 (2013). https://doi.org/10.3938/jkps.62.6

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  • DOI: https://doi.org/10.3938/jkps.62.6

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