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Local optical spectroscopy of opaline photonic crystal films

  • Nanomaterials and Ceramics
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Abstract

The homogeneity of opaline films obtained by vertical deposition of colloidal SiO2 microparticles has been studied by scanning electron microscopy (SEM) and local optical spectroscopy. It was found that the particle size distribution is narrowed during the deposition, the microstructure of the films improves, and the reflection peak in the first photonic stop band increases and narrows. These changes may be due to the fact that large microparticles, whose mass significantly exceeds the average mass, leave the solution in the course of time, falling on the bottom of the vessel under gravity. It is established that the microstructure of opaline films is improved with a decrease in thickness.

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Correspondence to S. O. Klimonsky.

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Original Russian Text © T. Bakhia, A.E. Baranchikov, V.S. Gorelik, S.O. Klimonsky, 2017, published in Kristallografiya, 2017, Vol. 62, No. 5, pp. 815–818.

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Bakhia, T., Baranchikov, A.E., Gorelik, V.S. et al. Local optical spectroscopy of opaline photonic crystal films. Crystallogr. Rep. 62, 783–786 (2017). https://doi.org/10.1134/S1063774517050029

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  • DOI: https://doi.org/10.1134/S1063774517050029

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