{"620545":{"#nid":"620545","#data":{"type":"event","title":"Shear thickening suspensions","body":[{"value":"\u003Ch3\u003ESoft Condensed Matter Seminar\u003C\/h3\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EConcentrated suspensions of hard particles such as cornstarch in water exhibit shear thickening, a non-Newtonian fluid behavior in which an increasing shear rate causes the effective viscosity of the fluid to increase, and even support a load or crack like a solid.\u0026nbsp; Such suspensions can even be strong enough to support a person walking or running on the surface of the fluid.\u0026nbsp; These material properties are promising for applications such as rate-dependent dampers and impact protection. My group carries out experiments to obtain a constitutive relation between stress, strain, and strain rate that can describe the material properties, and to understand how it relates to the properties of the suspended particles and their many-body interactions.\u0026nbsp; At the microscopic scale, particles can interact through many forces, including contact friction, electrostatic interactions, and even surface tension at the boundary of the suspension.\u0026nbsp; As these flows consist of many hard particles in contact or near-contact, connections to granular flows abound; dilation plays a major role in the mechanics, and the jamming transition (where the particle concentration is just large enough that they form a system-spanning contact network) acts as a critical point that controls the strength of shear thickening.\u0026nbsp; The end goal of this research is to understand the materials well enough to design materials customized for different applications.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Soft Condensed Matter Seminar, Professor Eric Brown, Yale University"}],"uid":"34720","created_gmt":"2019-04-17 14:33:38","changed_gmt":"2019-04-17 14:52:49","author":"tdavis333","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2019-04-30T16:00:00-04:00","event_time_end":"2019-04-30T17:00:00-04:00","event_time_end_last":"2019-04-30T17:00:00-04:00","gmt_time_start":"2019-04-30 20:00:00","gmt_time_end":"2019-04-30 21:00:00","gmt_time_end_last":"2019-04-30 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"620541":{"id":"620541","type":"image","title":"Professor Eric Brown, Yale University","body":null,"created":"1555510080","gmt_created":"2019-04-17 14:08:00","changed":"1555510080","gmt_changed":"2019-04-17 14:08:00","alt":"","file":{"fid":"236281","name":"Eric Brown.JPG","image_path":"\/sites\/default\/files\/images\/Eric%20Brown.JPG","image_full_path":"http:\/\/www.tlwarc.hg.gatech.edu\/\/sites\/default\/files\/images\/Eric%20Brown.JPG","mime":"image\/jpeg","size":15584,"path_740":"http:\/\/www.tlwarc.hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Eric%20Brown.JPG?itok=_8Su3oQr"}}},"media_ids":["620541"],"related_links":[{"url":"https:\/\/seas.yale.edu\/faculty-research\/faculty-directory\/eric-brown","title":"Professor Eric Brown"}],"groups":[],"categories":[],"keywords":[{"id":"960","name":"physics"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003Etara.davis@physics.gatech.edu\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}