Abstract
We generalize the Ericksen-Leslie theory for the dynamics of nematic liquid crystals by including the director-density coupling energy [Formula: see text]. It corresponds to the cost in energy due to the interaction of spatially varying mass density [Formula: see text] and the liquid crystal director [Formula: see text]. A striking confirmation of the theory is achieved by confronting it with experimental data on acoustical Fréedericksz transition.
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