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Yielding in hard sphere glasses

Date: 2018-07-13
Time: 14:00
Venue: 中科院物理研究所D楼211会议室(Room 211, Building D, IOP)
Speaker: Yuliang Jin(金瑜亮)

Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院,理论物理所)

Abstract: I will firstly review recent theoretical progress on understanding the nature of yielding in amorphous solids. Then I will discuss numerical results obtained from simulations of a polydisperse hard sphere glass model. The glass states are quenched from equilibrium supercooled liquid states, which are obtained by using the swap Monte Carlo algorithm. Such glass states have an unprecedented range of initial stability, corresponding to a broad category of glassy materials ranging from colloidal to molecular to metallic to ultra-stable glasses. The response of hard sphere glasses to simple, slow shear is studied. The numerical data on yielding are compared to some theoretical predictions. I will also briefly discuss shear-jamming and dilatancy in hard sphere glasses.