{"66361":{"#nid":"66361","#data":{"type":"event","title":"MSE M.S.  Defense - Shu Xiang","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETitle\u003C\/strong\u003E:\u0026nbsp;\nPiezoelectric Thin Films and Nanowires: Synthesis and Characterization\u003C\/p\u003E\n\n\n\n\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E: Traditional vapor phase deposition techniques of PZT\noffer poor conformality over three-dimensional surfaces due to their reactant\ntransport mechanisms. As an alternative, sol-gel synthesis may provide new\nprocess possibilities to overcome this hurdle but the film quality is usually\ninferior. The first part of this study is dedicated to the characterization of\nthe electric properties and yield of PZT thin film prepared by the sol-gel\nprocess. Several conducting materials that can be coated on three-dimensional\nsurfaces have been evaluated as electrodes, and the possibility to form a\nconformal coating over a three-dimensional surface by solution coating\ntechniques has been demonstrated.\n\n\n\n\u003C\/p\u003E\u003Cp\u003EZnO and GaN micro\/nanowires are promising piezoelectric\nmaterials for energy harvesting and piezotronic device applications.\u0026nbsp; The second part of this study is focused on\nZnO and GaN micro\/nanowires grown by physical vapor deposition techniques. The\nmorphology and chemical compositions are revealed by electron microscopy.\nUtilizing the as-grown ZnO nanowires, single nanowire based photocell is\nfabricated, and its performance is studied in terms of its response time,\nrepeatability, excitation position and polarization dependence upon He-Cd\nUV-laser illumination. Employing the as-grown GaN nanowires, single nanowire\nbased strain sensor is demonstrated, and its behavior is discussed in terms of\nthe polar axis orientation of the nanowire and the Schottky contacts.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003ETitle:\u0026nbsp;\nPiezoelectric Thin Films and Nanowires: Synthesis and Characterization.\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"MSE M.S.  Defense - Shu Xiang"}],"uid":"27388","created_gmt":"2011-06-02 11:18:10","changed_gmt":"2016-10-08 01:55:03","author":"Bill Miller","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2011-06-07T15:00:00-04:00","event_time_end":"2011-06-07T18:00:00-04:00","event_time_end_last":"2011-06-07T18:00:00-04:00","gmt_time_start":"2011-06-07 19:00:00","gmt_time_end":"2011-06-07 22:00:00","gmt_time_end_last":"2011-06-07 22:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"1238","name":"School of Materials Science and Engineering"}],"categories":[],"keywords":[{"id":"10802","name":"MSE_Interal_Event"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1791","name":"Student sponsored"}],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}