In a binary system of cholesteric liquid crystals with righthanded sense of helix a twofold helical inversion at two different molar fractions ϰn,1 and ϰn, 2 has been observed by measurements of circular dichroism and optical rotatory power. In the region of composition between ϰn,1 and ϰn, 2 all mixtures exhibit a left-handed cholesteric structure.
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Finkelmann et al. (1973) studied this question.