{"437081":{"#nid":"437081","#data":{"type":"event","title":"THE STATISTICAL MECHANICS OF GRAPHENE MEMBRANES AND RIBBONS","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ESchool of Physics Colloquium: Prof. David Nelson, Harvard University\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EUnderstanding deformations of macroscopic thin plates and shells has a long and rich history, culminating with the Foeppl-von Karman equations in 1904. These highly nonlinear equations are characterized by a dimensionless coupling constant (the \u0022Foeppl-von Karman number\u0022) that can easily reach vK = 10^7 in an ordinary sheet of writing paper. Since the late 1980\u0027s, it has been clear that thermal fluctuations in microscopically thin elastic membranes fundamentally alter the long wavelength physics, leading to a negative thermal expansion coefficient, and a strongly scale-dependent bending energy and Young\u0027s modulus. Recent experiments from the McEuen group at Cornell that twist and bend individual atomically-thin free-standing graphene sheets (with vK = 10^13!) call for a theory of the mechanical deformation of thermally excited membranes with large Foeppl-von Karman number. We present here results for the bending and pulling of thermalized graphene ribbons and in the cantilever mode.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"THE STATISTICAL MECHANICS OF GRAPHENE MEMBRANES AND RIBBONS"}],"uid":"27664","created_gmt":"2015-08-19 12:16:59","changed_gmt":"2017-04-13 21:18:44","author":"Alison Morain","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-10-12T16:00:00-04:00","event_time_end":"2015-10-12T17:00:00-04:00","event_time_end_last":"2015-10-12T17:00:00-04:00","gmt_time_start":"2015-10-12 20:00:00","gmt_time_end":"2015-10-12 21:00:00","gmt_time_end_last":"2015-10-12 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"138281","name":"GRAPHENE MEMBRANES AND RIBBONS"}],"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":""}}}