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Seeking simplicity in complexity: a physicist's view of vulcanized media (in PDF)
Aspen Center for Physics Colloquium, July 7, 2017 and elsewhere
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Torn polymer liquids: using tricks from the quantum world to understand them (in PDF)
Washington University in St. Louis Physics Department Colloquium, December 7, 2016 and elsewhere
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Strange and subtle states of matter: the topological ideas behind the 2016 Nobel Prize in Physics (YouTube video)
Georgia Tech College of Sciences Frontiers in Science Public Lecture, November 14, 2016
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Strands of superconductivity at the nanoscale (in PowerPoint)
University of Victoria (Canada) Colloquium, November 2013
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Phase-slip avalanches in the superflow of helium-4 through arrays of nano-apertures (in PDF)
U.C. Berkeley; Washington University in St. Louis; UIUC; and PASI-06, Argentina; Autumn 2006
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Superconductivity at the nanoscale (in PDF)
Oxford University seminar and elsewhere (November 2004), and elsewhere
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Quantal Andreev billiards and their spectral geometry (in PDF)
Yukawa Institute for Theoretical Physics seminar (Kyoto, Japan, October 2000), and elsewhere
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Games for Judges: An approach to the design of legal liability rules (in PowerPoint)
Understanding Complex Sytems symposium (Urbana, Illinois 2002);
Michael Wortis Retirement Celebration (Burnaby, Canada 2002), and elsewhere