Model for the planar-homeotropic anchoring transition induced by trans-cis isomerization.
We present a model to explain the planar-homeotropic anchoring transition of azobenzene induced by UV illumination via trans-cis isomerization. We consider bulk and surface as two different phases (separated by an infinitely sharp interface) which are in equilibrium. We obtain a relation for the exposure time after which the transition takes place.
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Dipartimento di Fisica, and Instituto Nazionale di Fisica della Materia (INFM), Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy.
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