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Preparation of Monodisperse Silica Nanoparticles via Controlling the Interphase of Two-Phase Synthesis for Optical Anticounterfeiting Materials

  • Original Article - Electronics, Magnetics and Photonics
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Abstract

Monodisperse silica particles were fabricated by seed synthesis and growth using two-phase synthesis methods and additional growth methods based on the Stöber process. The particle size and monodispersity of the silica particles were investigated by changing the reaction time and reactant concentration during seed growth. At the beginning of seed growth, small and large particles were present at the same time; however, the size became more uniform as the reaction proceeded. When the stirring conditions were constant, the size of the silica particles was constant, despite variations in the reactant concentration. Relatively simple methods of manufacturing photonic crystal films via the self-assembly of monodisperse silica particles in a regular lattice were demonstrated. Using photocurable colloidal suspensions, practical methods are presented to produce colloidal photonic crystals with high optical transparency and physical stiffness.

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Acknowledgements

This work was supported by the research fund of Chungnam National University.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134, South Korea

    Soo-Dong Kim, Srivathsava Surabhi & Jong-Ryul Jeong

  2. Department of Anticounterfeit Center, Korea Minting Security Printing and ID Card Operating Corp., Daejeon, 34132, South Korea

    Soo-Dong Kim

  3. Department of Materials Science and Engineering, Chungnam National University, Daejeon, 34134, South Korea

    Jihoon Choi

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  1. Soo-Dong Kim
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  2. Srivathsava Surabhi
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  3. Jihoon Choi
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  4. Jong-Ryul Jeong
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Correspondence to Jihoon Choi or Jong-Ryul Jeong.

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Kim, SD., Surabhi, S., Choi, J. et al. Preparation of Monodisperse Silica Nanoparticles via Controlling the Interphase of Two-Phase Synthesis for Optical Anticounterfeiting Materials. Electron. Mater. Lett. 15, 673–679 (2019). https://doi.org/10.1007/s13391-019-00165-4

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  • DOI: https://doi.org/10.1007/s13391-019-00165-4

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