[Slaam] SLAAM Seminar April 15: Shreyas Gokhale (MIT)

[SLAAM Distribution List]

Dear enthusiasts of the SLAAM seminars,


We are excited to announce that the next Soft Living Active and Adaptive Matter (SLAAM)<https://physics.ucmerced.edu/slaam> seminar will be given by Dr. Shreyas Gokhale (MIT) on Monday, April 15, at 9am Pacific/11am Central/12 noon Eastern time (US), with the title:

“Excitable nonreciprocal solids”


Please join at the link below to attend:

https://zoom.us/j/99546002717?pwd=R09PZ0dmMmZaTW9KWGp4V1Vadk5ZQT09

Zoom Meeting ID: 995 4600 2717  |   Passcode: 273914
There will be a brief Q&A session at the end of the hour. Graduate students will have an opportunity to interact with the speaker in an informal setting during the "Meet the speaker" timeslot just after the talk.



Please see more info in the flyer here<https://physics.ucmerced.edu/sites/physics.ucmerced.edu/files/event/SLAAM/shreyas_gokhale_slaam_v2.pdf> and in the text below:

Abstract: Emergent nonreciprocal interactions in active condensed matter can give rise to phases that are impossible to realize in equilibrium. In this talk, I will discuss our recent discovery and investigations of two stable macroscopically nonreciprocal states, one static and one oscillatory, in living chiral crystals of starfish embryos. The two phases are characterized by two distinct mechanisms of parity breaking, namely, the spinning of individual embryos, and the precession of their axis of rotation. I will discuss how the oscillatory phase can be excited from the static phase in a highly selective manner using external mechanical perturbations in the form of uniaxial compression steps. Our theoretical model predicts, and data analysis confirms that the two mechanisms of parity breaking retain distinctive dynamical signatures in the dispersion relation of these nonequilibrium solids. In a broader context, our findings demonstrate how distinct mechanisms of symmetry breaking on the particle scale can govern steady state properties as well as excitations in active mechanical metamaterials.

Speaker bio: Shreyas Gokhale is a Physics of Living Systems (PLS) Postdoctoral Fellow in the Department of Physics at MIT, working primarily with the groups of Prof. Nikta Fakhri and Prof. Jörn Dunkel. He is interested in understanding nonequilibrium self-organization in active matter using a combination of experiments, data analysis, and theory.
Shreyas obtained a PhD in experimental soft matter physics from Prof. Ajay Sood’s group at the Indian Institute of Science, working in close collaboration with Prof. Rajesh Ganapathy at JNCASR. His doctoral research focused on polycrystalline grain growth and glass formation in colloidal systems. He then moved to MIT as a Human Frontier Science Program (HFSP) Postdoctoral Fellow to study synchronization of bacterial population oscillations in Prof. Jeff Gore’s group, before transitioning to active matter research.


Hope to see you there!



Best regards,

Dan Beller

on behalf of the SLAAM organizing team
(Alexandra Tayar, Suraj Shankar, Kinjal Dasbiswas)

To join the SLAAM mailing list, please sign up here<https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.google.com_forms_d_e_1FAIpQLScTyzEuuE7TfrrapgP4tzN-5FoPSqbBhURUxa9-2Dzc8USnY1IPzA_viewform&d=DwMFAw&c=WO-RGvefibhHBZq3fL85hQ&r=6T170XR90Za4-nl9r1e8-WfEJbvH5g5hJbA9UumqfWQ&m=NK4EGo1VvrDiYSxdvOUJXgCkEAzTrQzNpQi-P59LZiKL_lMA3briJm9KQh9Y3suN&s=3hc1lEhiJwBLtMEr12Z9K5XtZaVlEfOZKYXGtXCjRDg&e=>. If you’re a postdoc interested in giving a SLAAM talk, we invite you to register your interest on that webform.


Daniel Beller
Assistant Professor
Department of Physics and Astronomy
Johns Hopkins University
pages.jh.edu/dbeller3
(he/him/his)

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ucmerced.edu/pipermail/slaam/attachments/20240410/7223d9ba/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: shreyas_gokhale_slaam_v2.pdf
Type: application/pdf
Size: 2281061 bytes
Desc: shreyas_gokhale_slaam_v2.pdf
URL: <http://lists.ucmerced.edu/pipermail/slaam/attachments/20240410/7223d9ba/attachment-0001.pdf>