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Anisotropic Optical Properties of Hexagonal Boron Nitride Thin Films

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 نشر من قبل Lyubov Kotova
 تاريخ النشر 2021
  مجال البحث فيزياء
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Few-layer flakes of hexagonal boron nitride were prepared by ultrasonication of bulk crystals and agglomerated to form thin films. The transmission and reflection spectra of the thin films were measured. The spectral dependences of the linear and circular polarization revealed a hidden anisotropy of the films over the whole sample area which could not be explained by the anisotropy of the chaotically-oriented individual particles. Statistical analysis of optical microscopy images showed a macroscopic particle density distribution with ordering corresponding to the optical axis observed in the polarization data.



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