{"664577":{"#nid":"664577","#data":{"type":"event","title":"School of Physics Colloquium","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETitle:\u0026nbsp;\u003C\/strong\u003EDynamics of active interfaces\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ESpeaker: \u003C\/strong\u003EItamar Kolvin\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EHost:\u0026nbsp;\u003C\/strong\u003E\u003Ca href=\u0022https:\/\/physics.gatech.edu\/user\/david-rocklin\u0022\u003EZeb Rocklin\u003C\/a\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract:\u0026nbsp;\u003C\/strong\u003EBiological interfaces are continuously perturbed by energy-consuming molecules. Active stresses at interfaces make cells crawl, change shape, and reorganize their content. How should we understand the dynamics of active interfaces?\u0026nbsp; I will present experiments that couple active stresses to soft interfaces. Active liquid-liquid interfaces are formed by merging molecular motors and their associated biofilaments with water-soluble phase-separating polymers. Consequently, interfaces support wave propagation without inertia, droplets undergo spontaneous fission, and fluids climb vertical walls. I will also show how active stresses mold crosslinked actin filament bundles into dynamic solid membranes. Giant bending fluctuations endow membranes with soft stretching degrees of freedom. For membranes that are a few millimeters in width, system-size periodic oscillations appear that are coupled to unidirectional flow waves. Active stress is thus an emerging paradigm for the assembly and dynamics of matter.\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u003Cstrong\u003EBio\u003C\/strong\u003E:\u0026nbsp;I am an experimental physicist interested in the multi-scale dynamics of matter. I obtained my Ph.D. in Physics from the Hebrew University of Jerusalem for studying dynamic fracture in brittle hydrogels. In 2017, I became a Human Frontier Science Program fellow at UC Santa Barbara. I assemble materials from biological components with unique functionalities to ask how active matter moves and how fibrous gels deform.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Dr. Itamar Kolvin; Dynamics of active interfaces"}],"uid":"35687","created_gmt":"2023-01-10 00:36:12","changed_gmt":"2023-02-09 23:30:08","author":"kcolebrooke3","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2023-02-16T11:00:00-05:00","event_time_end":"2023-02-16T12:00:00-05:00","event_time_end_last":"2023-02-16T12:00:00-05:00","gmt_time_start":"2023-02-16 16:00:00","gmt_time_end":"2023-02-16 17:00:00","gmt_time_end_last":"2023-02-16 17:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"4215","name":"colloquium"},{"id":"166937","name":"School of Physics"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}