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Reposted by @lobotomie.bsky.social

Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 26/09/2026

If you worked with cross-polarization microscopy, you like birefringence. It's the property that gives us some really cool optics. So, naturally, someone had the thought: what if we push that to the maximum? 🧪⚒️ Link: onlinelibrary.wiley.com/doi/full/10…

$The quantitative investigation of the birefringence property for BIQCdCl4. a) Schematic diagram of the working principle of a polarizing microscope. b) Original interference color of a plate-shaped single crystal of BIQCdCl4 under cross-polarized light. c) Rotating the Berek compensator clockwise and counterclockwise to achieve extinction of the crystal. d) The wavelength-dependent refractive indices of BIQCdCl4 in (010) plane extracted from the theoretically computed dielectronic function by CASTEP. e) The refractive index distribution of BIQCdCl4 in the (010) plane at a specific wavelength of 546 nm. f) Triaxial ellipsoid describing the three refractive indices along the principal refractive axis at a wavelength of 546 nm.$

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