Small angle x-ray scattering pattern showing the biaxial nematic phase of boardlike goethite (α-FeOOH) colloidal particles in a magnetic field parallel to the x-ray beam (normal to the page).
From the article:
Experimental Realization of Biaxial Liquid Crystal Phases in Colloidal Dispersions of Boardlike ParticlesE. van den Pol, A. V. Petukhov, D. M. E. Thies-Weesie, D. V. Byelov, and G. J. Vroege
Phys. Rev. Lett. 103, 258301 (2009)
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