Date/Time: 04-23-2019 - Tuesday - 05:00 PM - 07:00 PM
Jihui Nie1 Siddharth Sundararaman1 Liping Huang1 Pawel Keblinski1

1, Rensselaer Polytechnic Institute, Troy, New York, United States

We use molecular dynamics simulations to determine the pressure-induced structural changes in several oxide glasses including permanent densification and the effect of these changes on thermal properties. We show that densified glass structures exhibit increased thermal conductivity, which may be attributed to the increased density and elastic modulus. The local properties analysis reveals that the higher-pressure treatment reduces elastic heterogeneities, which might also contribute to higher thermal conductivity of densified glasses.

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