{"502811":{"#nid":"502811","#data":{"type":"event","title":"Short-time dynamics in dispersions with competing short-range attraction and long-range repulsion","body":[{"value":"\u003Cp\u003EThe dynamic clustering of globular particles in suspensions exhibiting competing short-range attraction and long-range repulsion such as in protein solutions has gained a lot of interest over the past years. We investigate theoretically the influence of clustering on the dynamics of globular particle dispersions [1]. To this end, we systematically explore various pair potential models by a combination of state-of-the-art analytic methods in conjunction with computer simulations where the solvent-mediated hydrodynamic interactions are likewise included. Our theoretical results show that the cluster peak (intermediate-range-order peak) is present also in the hydrodynamic function characterizing the short-time dynamics, in accord with experimental data [2]. Enhanced short-range attraction leads to a smaller self-diffusion coefficient and a larger dispersion viscosity. The behavior of the (generalized) sedimentation coefficient is more intricate, e.g. showing non-monotonic interaction strength dependence.\u003C\/p\u003E\u003Cp\u003E[1] J. Riest and G. N\u00e4gele, \u003Cem\u003EShort-time dynamics in dispersions with competing short-range attraction and long-range repulsion\u003C\/em\u003E, Soft Matter 11, 9273 (2015). \u003C\/p\u003E\u003Ch1\u003E[2] Collaboration with D. Godfrin (MIT), Y. Liu (NIST) and N. Wagner (UDEL), work in progress.\u003C\/h1\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Short-time dynamics in dispersions with competing short-range attraction and long-range repulsion"}],"uid":"27664","created_gmt":"2016-02-18 12:11:43","changed_gmt":"2017-04-13 21:16:35","author":"Alison Morain","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2016-03-11T10:00:00-05:00","event_time_end":"2016-03-11T11:00:00-05:00","event_time_end_last":"2016-03-11T11:00:00-05:00","gmt_time_start":"2016-03-11 15:00:00","gmt_time_end":"2016-03-11 16:00:00","gmt_time_end_last":"2016-03-11 16:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"166937","name":"School of Physics"},{"id":"168396","name":"Soft Condensed Matter \u0026 Biophysics"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78751","name":"Undergraduate students"},{"id":"78761","name":"Faculty\/Staff"},{"id":"174045","name":"Graduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Ca href=\u0022mailto:amorain@gatech.edu\u0022\u003Eamorain@gatech.edu\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}