{"62236":{"#nid":"62236","#data":{"type":"event","title":"MSE Ph.D. Defense - Sheng Xu","body":[{"value":"\u003Cp\u003EThesis Title: Oxide nanowire arrays for energy sciences -- Room 4211, MRDC\u003C\/p\u003E\n\n\n\n\u003Cp\u003EAbstract:\u003C\/p\u003E\n\n\u003Cp\u003EOxide nanowire arrays are playing an important role in\nenergy sciences nowadays, including energy harvesting, energy storage, and\npower management. By utilizing a wet chemical growth method, we demonstrated\nthe capabilities of synthesizing density controlled vertical ZnO nanowire\narrays on a general substrate, optimizing the aspect ratio of the vertical ZnO\nnanowire arrays guided by a statistical method, epitaxially growing patterned\nvertical ZnO nanowire arrays on inorganic substrates, epitaxially growing\npatterned horizontal ZnO nanowire arrays on non-polar ZnO substrates, and the\nlift-off of the horizontal ZnO nanowire arrays onto general flexible\nsubstrates. In addition, single crystalline\u003C\/p\u003E\n\n\u003Cp\u003EPbZrxTi1-xO3 (PZT) nanowire arrays were epitaxially grown\non conductive and nonconductive substrates by hydrothermal decomposition.\u003C\/p\u003E\n\n\u003Cp\u003EBeyond that, based on the as-synthesized ZnO nanowire\narrays, we demonstrated multilayered three dimensionally integrated direct\ncurrent and alternating current nanogenerators. By integrating a ZnO nanowire\nbased nanogenerator with a ZnO nanowire based nanosensor, we demonstrated\nsolely ZnO nanowire based self-powered nanosystems. Also, utilizing a\ncommercial full-wave bridge rectifier, we rectified the alternating output\ncharges of the nanogenerator based on PZT nanowire arrays, and the rectified\ncharges were stored into capacitors, which were later discharged to light up a\nlaser diode (LD). In addition, blue\/near-ultraviolet (UV) light emitting diodes\n(LED) composed of ordered ZnO nanowire arrays on p-GaN wafers were presented.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EThesis Title: Oxide nanowire arrays for energy sciences\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":"","uid":"27388","created_gmt":"2010-10-18 20:20:12","changed_gmt":"2016-10-08 01:53:16","author":"Bill Miller","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2010-10-29T16:00:00-04:00","event_time_end":"2010-10-29T17:00:00-04:00","event_time_end_last":"2010-10-29T17:00:00-04:00","gmt_time_start":"2010-10-29 20:00:00","gmt_time_end":"2010-10-29 21:00:00","gmt_time_end_last":"2010-10-29 21:00:00","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":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}