Pressure chiral nematic pitches

A chiral dopant in a nematic phase can cause a helical pitch and the resulting phase is called cholesteric (Ch = N ). This phase is continuously miscible with the nematic phase (Effect (b)). In some special cases, the helical pitch might be infinitely long as found for the compensated cholesteric phase. Even this phase is different from the achiral nematic phase, because it has polar properties, i.e., pressure can induce chiral ordering (Effect (a)). A chiral... 

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