Computations in Science Seminars
Feb 2018
21
Wed 12:15
Ivan I Smalyukh, University of Colorado Boulder
e-mail:
Host: William Irvine ()
Organizer: Delphine Coursault ()
Topological Solitons and Other Knots in Soft Matter

Topologically nontrivial fields and vortices frequently arise in classical and quantum field theories, plasmas, optics, cosmology, hard condensed matter and atomic systems. On the other hand, soft matter systems, such as colloids and liquid crystals, offer the complexity in degrees of freedom and symmetries that allow for probing topologically analogous phenomena on experimentally accessible scales. In my lecture, I will discuss how surfaces of colloidal knots and handlebodies interact with the liquid crystalline molecular alignment fields and how topological knot solitons can emerge as static field configurations within the chiral colloidal ferromagnets [1-5]. I will show how such synergistic combinations of topology and self-assembly paradigms can emerge as an exciting scientific frontier of topological soft matter.

[1] A. Martinez, L. Hermosillo, M. Tasinkevych and I.I. Smalyukh. Proc. Natl. Acad. Sci. U.S.A. 112, 4546-4551 (2015). [2] A. Martinez, M. Ravnik, B. Lucero, R. Visvanathan, S. Žumer and I. I. Smalyukh. Nature Materials 13, 258–263 (2014).[3] B. Senyuk, Q. Liu, S. He, R. D. Kamien, R. B. Kusner, T. C. Lubensky and I. I. Smalyukh. Nature 493, 200-205 (2013). [4] P. J. Ackerman and I. I. Smalyukh. Nature Mater 16, 426-432 (2017). [5] J.-S.B. Tai, P.J. Ackerman and I.I. Smalyukh. PNAS. doi:10.1073/pnas.1716887115 (2018).

Feb 2018
28
Wed 12:15
OPEN
Mar 2018
14
Wed 12:15
Roy Beck-Barkai , Tel-Aviv University
e-mail:
Host: Tom Witten
Organizer: Peter Chung ()
Mar 2018
28
Wed 12:15
Ken Kamrin, MIT
e-mail:
Host: William Irvine ()
Apr 2018
4
Wed 12:15
Benjamin B. Machta, Princeton University
e-mail:
Host: Arvind Murugan ()
Apr 2018
11
Wed 12:15
Michael Shelley, NYU Courant, Flatiron Institute
e-mail:
Host: William Irvine ()
Organizer: Glen Hocky ()
Apr 2018
18
Wed 12:15
Alfred Crosby, University of Massachusetts Amherst
e-mail:
Host: Heinrich Jaeger
Apr 2018
25
Wed 12:15
Martin van Hecke, Leiden Institute of Physics
e-mail:
Host: Arvind Murugan ()
May 2018
2
Wed 12:15
Ned Wingreen
e-mail:
Host: Arvind Murugan ()
May 2018
9
Wed 12:15
Leigh Orf , University of Wisconsin
e-mail:
Host: William Irvine ()
May 2018
16
Wed 12:15
OPEN
May 2018
23
Wed 12:15
Ariel Amir, Harvard
e-mail:
Host: Arvind Murugan ()
May 2018
30
Wed 12:15
Pedro J Saenz, MIT
e-mail:
Host: William Irvine ()
Jun 2018
6
Wed 12:15
OPEN