Abstract
We explore with Monte Carlo simulations the NMR finding that solutes in special nematic liquid crystal mixtures `feel' zero average electric field gradient F ZZ . The simulations involve solute–solvent mixtures of 1000 identical Gay–Berne ellipsoidal particles with added electric quadrupoles of varying strengths placed at particle centres. As long as all quadrupoles are sufficiently small, F ZZ calculated at the particle centres is equal for all particles. For larger quadrupole moments, interactions among quadrupoles alter the interparticle distribution and subsequently F ZZ depends on both solvent and solute quadrupoles; in general, the quadrupolar interactions produce a negative contribution to energy.
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