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Emulsion glasses: a dynamic light-scattering study

The liquid-glass transition occurs in a wide range of ma­ terials including the silicates, molecular liquids, molten salts, and polymers. At temperatures well below the glass transi­ tion temperature Tg, glasses are amorphous solids with non­ zero shear modulus on any measurable time scale, while their structures exhibit no evidence of long-range order. It is generally (though not universally) believed that the glass transition is a purely kinetic transition, and that no thermo­ dynamic phase transition is involved.