2024/04/26 by ChulMin Oh, Hervé Hugonnet, Oh, ChulMin +5
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #Geophysical and Geoelectrical Methods #Geophysics and Gravity Measurements #Optics (physics.optics) #Scientific Research and Discoveries
paper · pdf · doi:10.48550/arxiv.2404.17206
openalex publication_date 2024/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Analyzing 3D anisotropic materials presents significant challenges, especially when assessing 3D orientations, material distributions, and anisotropies through scattered light, due to the inherently vectorial nature of light-matter interactions. In this study, we formulate a scattering theory based on the Rytov approximation, commonly employed in scalar wave tomography, tailored to accommodate vector waves by modifying the scattering matrix. Using this formulation, we investigate the intricate 3D structure of liquid crystals with multiple topological defects exploiting dielectric tensor tomography. By leveraging dielectric tensor tomography, we successfully visualize these topological defects in three dimensions, a task that conventional 2D imaging techniques fail to achieve.