We report on UV light-induced tilted anchoring in a mixture of the nematic liquid crystal N-(4-methoxybenzylidene)-4-butylaniline (MBBA) with a photoactive liquid crystalline azo dye (4-hexyloxybenzoloxy-4'-cyanoazobenzene) at 1 wt.% concentration. The surface anchoring found in this guest-host liquid-crystal system confined in homeotropic thin films is due to trans-cis photoizomerization of the guest azo molecules upon UV light.
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