Mechanically stable thermo-reversible gels of the liquid-crystal LC-E7 with 1,3:2,4-Di-O-benzylidene-D-sorbitol (DBS) form white light-scattering films that are reversibly switchable to a clear state by AC electric fields. It is established that the light-scattering nature of DBS/LC-E7 gels is an intrinsic material property that originates from the occurence of a monotectic-type point ("mesotectic") at very low DBS-concentration in the phase diagram of the DBS/LC-E7 system. [References: 16]
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