## Materials Working Group, 2014-2015

## Organized by Bob Kohn

Most "Materials Working Group" talks are by people at Courant (students, postdocs, visitors and faculty), discussing their recent or current work. The talks are informal, with plenty of discussion. A record of last year's activity is here. Our timeslot in Spring 2015 is Tuesday at 11-12 in WWH 1314. (We often run over, but not too much since the COB seminar meets in the same room at 12:30.) An email list for relevant announcements is maintained by Bob Kohn (kohn at cims dot nyu dot edu).

Feb 3: Heiner Olbermann (Univ of Bonn, visiting CIMS till mid-March) will discuss his work on approximately conical deformations of thin elastic sheets.

Feb 17: Julian Panetta (CIMS, Computer Science) will discuss his work (with Denis Zorin, James Zhou, and others) concerning optimal design, homogenization, and 3D printing.

March 3: Nadejda Drenska will discuss her work on a PDE approach to a model problem from the machine learning literature, concerning "prediction with expert advice".

March 24: Morteza Hakimi Siboni (CIMS starting 2/23) will discuss the use of homogenization-based methods to model electro-active polymer composites (consisting, for example, of rigid dielectric inclusions or fibers distributed in a dielectric elastomer matrix). This is joint work with Pedro Ponte-Castaneda.

March 31: No meeting.

April 7: Ian Tobasco will discuss current joint work with Aukosh Jagannath, on a stochastic control problem from the mean-field theory of spin glasses.

April 14: Cyrill Muratov will discuss work on 1D domain walls in thin-film ferromagnets.

April 21: Miranda Holmes-Cerfon will share some thoughts on the question: What is the invariant measure for a hypoelliptic diffusion? Also, she'll explain why this question arises naturally when one considers the effect of friction -- or another non-holonomic (hence non-Hamiltonian) constraint -- on a stochastic system.

April 28: no meeting

May 5: Miranda Holmes-Cerfon and Louis Theran (Aalto Univ) will discuss an interesting paper by C Kane and T Lubensky, "Topological boundary modes in isostatic lattices", Nature Physics 10 (2014) 39-45.

May 12: Lisa Larsson will discuss current work with Georg Stadler, concerning optimal sensor placement for an inverse problem viewed from a Bayesian perspective.

May 19: no meeting.

May 26: Laurent Mertz will discuss some of his current work.

Oct 7: Ian Tobasco will discuss his work concerning a thin elastic cylunder under axial compression.

Oct 14: No meeting

Oct 21: Ethan O'Brien will discuss work by Mora and Muller concerning elastic rods

Oct 28: Ross Lund (NJIT) will talk on "Dynamics of domain walls in ferromagnetic nanowires."

Nov 4 and 11: no meeting

Nov 18: Cyrill Muratov (NJIT) will discuss his work with Hans Knuepfer and Matteo Novaga on "Low density phases in a uniformly charged liquid".

Nov 25: no meeting. But note that Antonio De Simone (SISSA) will give a Special Applied Math Seminar on Wed 11/26 (10am, WWH 517) on "Motility at microscopic scales".