Charles-Victor Mauguin

French professor of mineralogy Charles-Victor Mauguin (19 September 1878 25 April 1958) was inventor (with Carl Hermann) of an international standard notation for crystallographic groups known as the Hermann–Mauguin notation or International notation.[1]

Charles-Victor Mauguin
Born19 September 1878
Died25 April 1958 (1958-04-26) (aged 79)
Known forHermann–Mauguin notation
Scientific career

Mauguin was the first to notice that when he sandwiched the semi-solid liquid crystals between two aligned polarizers, he could twist them in relation to each other, but the light continued to be transmitted. This phenomenon is called Mauguin regime (waveguide regime) in twisted nematic effect [2] [3] .


  1. Wyart, J. "50 Years of X-ray Diffraction" (PDF). International Union of Crystallography. Retrieved 19 July 2016.
  2. Mauguin, C.: Sur les cristaux liquides de Lehmann. Bull. Soc. Fr. Miner. 34, 71–117 (1911)
  3. Blinov L.M. Structure and Properties of Liquid Crystals (Springer, 2011), pp. 439. ISBN 978-90-481-8828-4 Chapter 11.
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