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[通知] KIT&南理工 Herbert Gleiter教授 物理所报告

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发表于 2018-6-11 20:34:33 | 显示全部楼层 |阅读模式
凝聚态物理-中关村论坛”第335次讲座

报告时间:2018年6月15日(星期五)上午10:00

报告地点:中科院物理研究所M楼236报告厅

报告题目:Nano-glasses: The Way to a World of New Materials with New Structures and Technological Applications

报 告 人:Professor Herbert Gleiter
                  Karlsruhe Institute of Technology, Karlsruhe, GERMANY
                  Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, CHINA

报告人简介:
      Herbert Gleiter obtained his PhD in 1966 in physics the University of Stuttgart. After spending several years at Harvard University and MIT, he accepted positions at the Universities of Bochum, Saarbruecken and the ETH Zuerich. In 1994, he joined the Executive Board of the Research Center Karlsruhe and founded there the Institute of Nanotechnology (INT). During his work at Harvard and MIT he discovered the existence of dislocations in inter-crystalline interfaces and proposed the ‘‘structural unit model’’ of grain boundaries which provides the basis for today’s grain boundary models. In the late 1970s, he pioneered a new class of materials: nano-crystalline materials. In 1989 he initiated the development of new class of noncrystalline solids, the so-called nanoglasses. His present work focuses on the application of nanotechnology to probe limits of Quantum Physics in systems of macroscopic size. Throughout his career he received more than 40 prizes/awards including four honorary doctorates, several honorary professorships and was appointed Founding Director of the ‘‘Herbert Gleiter Institute of Nanoscience’’ at Nanjing. He is member of 7 National Academies as well as a Honorary Member of several professional societies.

报告摘要:
      The way to a new world of technologies based on non-crystalline materials may be opened by means of nano-glasses. Nano-glasses consist of nanometer-sized glassy regions connected by (nanometer-wide) interfacial regions with atomic and electronic structures that do not exist in melt-cooled glasses. Due to their new atomic/electronic structures, the properties of nano-glass differ from the corresponding properties of melt-cooled glasses. For example, FeSc nano-glasses were (at 300K) strong ferro-magnets although the corresponding melt-cooled glasses were paramagnetic. Similarly, the ductility, the biocompatibility, the catalytic properties of nano-glasses were improved by up to several orders of magnitude. Moreover, nano-glasses open the way to new kinds of alloys as they permit the alloying of components that are immiscible in crystalline materials. This applies to components with the same as well as different kinds of chemical bonds.
      Just like in the case of nano-crystalline materials, the properties of which may be changed by varying the sizes and/or chemical compositions of the crystallites, the properties of nano-glasses may be controlled by varying the sizes and/or chemical compositions of the glassy clusters. This analogy opens the  perspective that a new age of technologies - a ”glass age”- may be initiated  by utilizing the new properties of nano-glasses and modifying their properties by varying the sizes and/or chemical compositions of the glassy clusters.

邀 请 人:汪卫华(电话:8264 9198)

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