CAREER: Synthesis, Characterization and Physical Properties of One-Dimensional Rare Earth Chalcogenide Nanomaterials

职业：一维稀土硫族化物纳米材料的合成、表征和物理性能

• 批准号: 0548232
• 负责人: Song Jin
• 金额: $ 54万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-03-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0548232&HistoricalAwards=false
• 关键词: CAREER; Synthesis; Characterization; Physical; Properties

TECHNICAL EXPLANATIONThis proposal aims to synthesize novel one-dimensional nanomaterials based on technologically and fundamentally important rare earth sulfides, such as ferromagnetic semiconducting europium sulfide (EuS) and intermediate valence metal samarium sulfide (SmS), and study their unique physical properties. These chemically synthesized single crystalline nanomaterials would enable both potential applications in spintronics and fundamental physical studies in nanoscale structures with highly correlated electrons. Taking a multidisciplinary approach, the PI and his co-workers will develop organometallic precursors to synthesize uniform or mixed rare earth sulfide nanowires by chemical vapor deposition, characterize the nanoscale structures and physical properties of the resulting nanomaterials using a variety of techniques in order to understand the synthesis-structure-property relationship. They will further investigate the relationship between ferromagnetism and semiconductivity of EuS nanowires and examine the size evolution of the fundamental properties. The PI also proposes to build an integrated educational program in materials chemistry by developing a graduate level course in nanomaterials chemistry, by encouraging and incorporating minority and underrepresented undergraduate students to participate in scientific research, and by collaboratively developing a Web based course on nanoscience and nanotechnology for high school teachers so that teachers can have the toolbox needed to incorporate elements of cutting edge science and technology into their curriculum. NON-TECHNICAL EXPLANATIONNanometer scale wires (nanowires) that are made of technologically useful and fundamentally important rare earth sulfide materials will be created, and their unique physical properties will be investigated for a variety of potential applications, such as the next generation nanoscale spin electronic ("spintronic") and magento-optical information storage devices. Despite the interesting combination of magnetic and semiconducting properties that rare earth sulfide materials possess, materials issues remain to be addressed. This interdisciplinary research proposal will lay the scientific foundation to enable the creation and understanding of these high quality nanoscale materials. Furthermore, an integrated educational program in materials chemistry will be built by developing a new graduate level course in nanomaterials chemistry, by encouraging and incorporating minority and underrepresented undergraduate students to participate in cutting edge scientific research, and by collaboratively developing the first Web based course on nanoscience and nanotechnology for high school teachers so that teachers can have the toolbox needed to incorporate elements of cutting edge science and technology into their curriculum. All of these will stimulate and engage the interest of students in science and technology and help to prepare the new generation of scientific and technological workforce.

技术解释旨在基于技术和根本重要的稀有土硫化物，例如铁磁性半导体硫化物（EUS）和中等的硫化物金属samarium samfide（SMS），并研究其独特的物理特性，并研究其独特的物理特性。这些化学合成的单晶纳米材料将在具有高度相关的电子的纳米级结构中既可以在旋转三位体和基本物理研究中进行潜在应用。 Taking a multidisciplinary approach, the PI and his co-workers will develop organometallic precursors to synthesize uniform or mixed rare earth sulfide nanowires by chemical vapor deposition, characterize the nanoscale structures and physical properties of the resulting nanomaterials using a variety of techniques in order to understand the synthesis-structure-property relationship.他们将进一步研究EUS纳米线的铁磁性和半导体之间的关系，并检查基本特性的大小演化。 PI还建议通过在纳米材料化学中开发研究生水平的课程来建立一项综合的教育计划，通过鼓励和纳入少数群体和纳入代表性不足的本科生来参与科学研究，并通过协作开发基于网络科学的纳米科学和纳米技术教师的网络课程，以使他们的纳米学院教师融入教师的范围内，以使他们的技术既可以促进他们的范围来努力。将创建由技术有用且根本重要的稀有土硫化物材料制成的非技术解释量表线（纳米线），并将研究其独特的物理特性，以用于各种潜在应用，例如下一代纳米级旋转旋转电子（“ Pertrtronic seltronic（“ Pertrtronic）”）和启发式信息信息存储设备。尽管稀有硫化物材料所拥有的磁性和半导体特性的结合有趣，但材料问题仍有待解决。这项跨学科研究建议将奠定科学基础，以使这些高质量的纳米级材料的创建和理解。 Furthermore, an integrated educational program in materials chemistry will be built by developing a new graduate level course in nanomaterials chemistry, by encouraging and incorporating minority and underrepresented undergraduate students to participate in cutting edge scientific research, and by collaboratively developing the first Web based course on nanoscience and nanotechnology for high school teachers so that teachers can have the toolbox needed to incorporate elements of cutting edge science and technology into their 课程。所有这些都将激发学生对科学和技术的兴趣，并有助于准备新一代的科学和技术劳动力。