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更新时间 :2015-06-05 12:59:59   浏览次数::191

 报告题目:Synthesis, characterization and reliability of 

nanoelectronic materials and devices

报告人:Professor Mario Lanza
报告时间地点:6月8日(周一)10:00,物理楼三层报告厅


报告摘要:Abstract

  In this talk I will present our recent progress on the synthesis, characterization and reliability of electronic devices based on nanowires and two dimensional materials. First, I will introduce our former work with graphene, which was initially oriented to the study of physical behaviors like wrinkling states, local defects and domain boundaries. Currently, we are focusing on commercial applications of graphene, including industrial coatings and micro electromechanical systems (MEMS). One of these devices is the popular ZnO nanowires based piezoelectric nanogenerator. Thanks to its flexibility and conductivity, graphene is an ideal electrode for rough substrates like nanowires arrays, as it can adapt to the profile of the underlying material, avoiding the formation of gaps and reducing the interface resistance. The MEMS device I will analyze is the ultra sharp tip of scanning probe microscope (SPM); I will present how graphene coatings can enhance the lifetime of SPM nanoprobes, leading to cheaper and more reliable research. Our in-situ analyses indicate that graphene can effectively protect the tips from high current densities and frictions, which are critical at the tip apex. In the second part of this talk I will introduce our recent explorations of other two dimensional materials, including atomically thin semiconductors an insulators. More specifically, I will introduce our exploration of the piezoelectric properties of MoS2, a property that was theoretically predicted in 2011 but not experimentally prove until last year. And Finally, I will also describe the dielectric stability of atomically thin Boron Nitride films, which is able to overcome the electronic performance of the most advanced high-k dielectrics, such as HfO2 and Al2O3.

报告人简介:

  Mario Lanza is a Young 1000 Talent (青年千人计划) group leader at the Institute of Functional Nano & Soft Materials (苏州大学功能纳米与软物质研究院), a laboratory selected as National Collaborative Innovation Center (首批国家协同创新中心名单), in Soochow University. Dr. Lanza got his PhD with honors in 2010 at the Electronic Engineering Department of Universitat Autonoma de Barcelona, with a thesis dedicated to ultrathin high-k dielectrics. During the PhD he was a visiting scholar at The University of Manchester (UK) and Infineon Technologies (Germany). In 2010 and 2011 he completed a postdoc at Peking University on the development of novel graphene MEMS. In 2012 and 2013 he was awarded with the Marie Curie postdoctoral fellow (玛丽•居里奖) to join Stanford University (USA), where he developed a research in the field of MOS nanocomposites. Dr. Lanza has published over 60 research papers, including Science, Advanced Materials, Nanoscale, Nature Scientific Reports, Applied Physics Letters and IEEE journals, as well as three patents, four book chapters and one editorial. He is a member of the advisory board of Wiley for the journal Crystal Research and Technology and co-chair of the dielectrics symposium at the Thin Films Society conference. Dr. Lanza leads a research group formed by two international postdocs, ten graduate students and one exchange student. His research interests encompass the synthesis, characterization and reliability of nanoelectronic materials and devices, including 2D materials for MEMS, non-volatile memories and solar cells.