Twist-bend nematic phases in binary mixtures of banana-shaped liquid crystalline molecules
We present a mean field theory to describe twist-bend nematic ( -Abstract Truncated-
) phases in binary mixtures of banana shaped, such as bent-core or dimer, liquid crystalline (LC) molecules with 
, where 
is a twist and 
is a bend elastic constant. We introduce the free energy for the mixtures by taking into account the director-pitch (DP) coupling 
of the consisting LC molecules 
) and calculate the phase diagrams on the temperature-concentration plane. Our theory demonstrates that the isotropic (I), or para-nematic (
<
Publisher URL: http://www.tandfonline.com/doi/full/10.1080/02678292.2017.1395483
DOI: 10.1080/02678292.2017.1395483
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