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Abstract <p>Anisotropic silver nanoparticles embedded in the single-crystalline silicon with crystallographic orientation (110) were fabricated using high-temperature annealing of silver island film obtained by galvanic displacement reaction. Due to crystallographic orientation of silicon wafer used as a substrate, embedded particles have a “boat” shape with 2-fold symmetry. Using spectroscopic ellipsometry, it was revealed that thus obtained structures demonstrate strong optical anisotropy in the visible spectral range at an angle of light incidence of 74°. Measurements were carried out at different angles of sample rotation (0°, 45°, and 90°) relative to the plane of light incidence. Using such studies, it was possible to detect a change in the position of the localized plasmon mode arising in the structure, with the maximum spectral position shift being 120 nm.</p>

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Optical Anisotropy of Boat-Shaped Silver Nanoparticles Embedded in Silicon (110)

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Yu. A. Zharova,
  • A. A. Ermina,
  • K. V. Prigoda,
  • V. O. Bolshakov,
  • E. S. Fedorova,
  • D. P. Markov

摘要

Abstract

Anisotropic silver nanoparticles embedded in the single-crystalline silicon with crystallographic orientation (110) were fabricated using high-temperature annealing of silver island film obtained by galvanic displacement reaction. Due to crystallographic orientation of silicon wafer used as a substrate, embedded particles have a “boat” shape with 2-fold symmetry. Using spectroscopic ellipsometry, it was revealed that thus obtained structures demonstrate strong optical anisotropy in the visible spectral range at an angle of light incidence of 74°. Measurements were carried out at different angles of sample rotation (0°, 45°, and 90°) relative to the plane of light incidence. Using such studies, it was possible to detect a change in the position of the localized plasmon mode arising in the structure, with the maximum spectral position shift being 120 nm.