Eric Sembrat's Test Bonanza

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Nonlinear Science & Mathematical Physics Seminar

Abstract

What is the critical load required to crush a soda can or a space rocket shell? Surprisingly, there is no good way to estimate it, because of the high defect-sensitivity of the buckling instability. 

Here we measure the response of (imperfect) soda cans to lateral poking and identify a generic stability landscape, which fully characterizes the stability of real imperfect shells in the case where one single defect dominates. 

Physics Public Lecture Seminar Series

Abstract:

Do we live in a simulation?  The School of Physics and the Society of Physics Students will host a public debate between faculty from the College of Science and the College of Computing to answer this question.  This event is free and open to the all.  There will be time at the conclusion of the debate for audience members to direct questions towards the faculty panel.

Condensed Matter and AMO Seminar

Abstract

Electrons in solids have been shown to support new non-interacting topological phases of matter such as topological insulators and semimetals. In this talk I will discuss three aspects of how topology plays a role in magnetic solids, which intrinsically involve strong electronic correlations. We will begin with a discussion of simple magnetically ordered states, and show how momentum space topology plays an important role in understanding fluctuations around such ordered states.

Soft Condensed Matter & Physics of Living Systems Seminar

Abstract

Synthetic rubber and biological hydrogels are dramatically different, but their properties and functions are largely determined by the structure and architecture of their common components polymers. Such a deterministic correlation poses opportunities in the field of polymer physics. In this talk, I will discuss how concepts and knowledge in polymer physics help understand biological questions, which, in turn, inspires the design of new soft materials.

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