Time-temperature superposition in viscous liquids
Niels Boye Olsen, Tage Christensen, Jeppe C. Dyre
Abstract
Dielectric relaxation measurements on supercooled triphenyl phosphite show that at low temperatures time-temperature superposition (TTS) is accurately obeyed for the primary (alpha) relaxation process. Measurements on 6 other molecular liquids close to the calorimetric glass transition indicate that TTS is linked to an ω-1/2 high-frequency decay of the alpha loss, while the loss peak width is nonuniversal.
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