'Shadow'glass transition in glass

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The glass transition is the most striking dynamic feature of glass-forming liquids and rigid glass,manifest in the follow-ing two scenarios [1].First,a viscous glass-forming liquid is transformed into a rigid glass state during cooling if the cooling rate is high enough to prevent the liquid from crystallizing—this process is called the \'liquid-glass transition\'.Sec-ond,a rigid glass state is transformed into a viscous liquid on heating—this process is called the \'glass-liquid transition\'or simply the \'glass transition\'.Substantial progress has been made in understand-ing of the glass transition through atom-istic simulations and advanced structure probing tools [1].
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