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Yeong Zen Chua

Influence of fragility and molecular symmetry on the formation of stable glasses

Universität Rostock, 2016


Abstract: The successful formation of vapor-deposited glasses with high kinetic stability of ethylcyclohexane, a strong glass former of m=60, and tetrachloromethane, with a pseudo isotropic molecular structure, indicates that fragility and molecular asymmetry are not prerequisites for stable glass formation. The AC chip nanocalorimetry was also improved with laser modulation reaching frequency 1MHz, allowing determination of the dynamic glass transition in a frequency range of 11 orders of magnitude together with measurements from four different temperature modulated differential scanning calorimeters.

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