{"597186":{"#nid":"597186","#data":{"type":"event","title":"PhD Defense by Jamey Gigliotti","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETHE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nGEORGIA INSTITUTE OF TECHNOLOGY\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nUnder the provisions of the regulations for the degree\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDOCTOR OF PHILOSOPHY\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\non Monday, October 23, 2017\u003Cbr \/\u003E\r\n12:30 PM\u003Cbr \/\u003E\r\nin Howey N110\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nwill be held the\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nDISSERTATION DEFENSE\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nfor\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nJamey Gigliotti\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\n\u0026quot;Integrated Dielectrics for Protection and Gating of Epitaxial Graphene Devices\u0026quot;\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nCommittee Members:\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nProf. Walt de Heer, Advisor, PHYS\u003Cbr \/\u003E\r\nProf. Eric Vogel, MSE\u003Cbr \/\u003E\r\nProf. Abdallah Ougazzaden, ECE\u003Cbr \/\u003E\r\nProf. Mark Losego, MSE\u003Cbr \/\u003E\r\nProf. Faisal Alamgir, MSE\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003Cbr \/\u003E\r\n\u003Cbr \/\u003E\r\nEpitaxial graphene is an excellent platform for future high performance nanoelectronics and fundamental transport studies.\u0026nbsp; However, due to its pristine crystalline surface, nearly free of dangling bonds, integrating dielectric and semiconducting materials into the epitaxial graphene system is challenging.\u0026nbsp; High-K metal oxides, such as Al\u003Csub\u003E2\u003C\/sub\u003EO\u003Csub\u003E3\u003C\/sub\u003E, have been widely investigated as a top gate; yet, despite innovative surface treatments and deposition techniques, metal oxide top gates reduce graphene transport performance and reliability.\u0026nbsp; Crystalline 2D materials, such as hexagonal boron nitride (hBN), have promised to overcome many of the challenges associated with metal oxides on graphene surfaces due to weak interlayer interactions.\u0026nbsp; Transferred 2D layers enable arbitrary stacking, but impart charged impurities at the interface and are not compatible with precise lattice alignment, making the technology ill-suited for high performance electronics.\u0026nbsp; Direct deposition of heterostructures is required.\u0026nbsp; To date, several attempts have been made to directly grow epitaxial hBN\/graphene heterostructures, but none display long range order at the critical graphene interface.\u0026nbsp; This work demonstrates a pristine interface between epitaxial graphene and hBN using a commercially available deposition system.\u0026nbsp; The refractory SiC substrate and high-quality graphene surface support a novel lateral atomic deposition process (LAD) to selectively grow 2D hBN on graphene surfaces. LAD is the 2D analog of atomic layer deposition technology where, ideally, a single row of atoms is deposited for each cycle, compared to a monolayer in ALD.\u0026nbsp; The structure of the hBN\/epitaxial graphene is confirmed with HRTEM, XPS, EELS, and HRXRD.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Integrated Dielectrics for Protection and Gating of Epitaxial Graphene Devices"}],"uid":"27707","created_gmt":"2017-10-11 12:42:10","changed_gmt":"2017-10-11 12:42:10","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-10-23T13:30:00-04:00","event_time_end":"2017-10-23T15:00:00-04:00","event_time_end_last":"2017-10-23T15:00:00-04:00","gmt_time_start":"2017-10-23 17:30:00","gmt_time_end":"2017-10-23 19:00:00","gmt_time_end_last":"2017-10-23 19:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}