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1990 (1)
1Author    A. Scharkowski, H. Schmiedel, R. Stannarius, E. WeißhuhnRequires cookie*
 Title    Elastic Constants of Nematic Phenylpyrimidines Determined by Two Different Methods  
 Abstract    A survey of various methods to measure the elastic constants K, of nematic liquid crystals is given. To determine K 3 and the anisotropy of the diamagnetic susceptibility Ax of two members of the 5n-hexyl-2-[4n-alkyloxy-phenyl]-pyrimidines and a mixture of both, we used a combined electro-magneto-optical method, consisting in independent measurements of the optical phase difference in electric and magnetic fields acting on the same cell. The temperature dependence of the K r and K 3 -values for these phenylpyrimidines can be explained by common theories. The Ax data show the same temperature dependence as the values of the orientational order parameter S obtained by 'H-NMR. 
  Reference    Z. Naturforsch. 45a, 37—42 (1990); received June 23 1989 
  Published    1990 
  Keywords    Nematic liquid crystals, elastic constants, diamagnetic susceptibility, electro-optic, magneto-optic 
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 TEI-XML for    default:Reihe_A/45/ZNA-1990-45a-0037.pdf 
 Identifier    ZNA-1990-45a-0037 
 Volume    45