Inter-American Materials Collaboration in Synthesis, Processing and Atomic-Scale Characterization of Nanostructured Materials

美洲材料在纳米结构材料的合成、加工和原子级表征方面的合作

• 批准号: 0303429
• 负责人: David Smith
• 金额: --
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0303429&HistoricalAwards=false
• 关键词: Inter; American; Materials; Collaboration; Synthesis

This Inter-American Materials Collaboration brings together three groups led by David Smith at Arizona State University (ASU), Humberto Terrones at the Instituto Potosino de Investigacion Cientifica y Tecnologica (IPICyT), San Luis Potosi, Mexico, and Guillermo Solorzano at the Pontificia Universidade Catolica-Rio de Janeiro (PUC-Rio), Brazil. The overall focus of the highly complementary research efforts is the synthesis, processing and atomic-scale characterization of nanostructured materials. These activities include the synthesis of nanoscale nitride particles based on Al, Ga, B and Si, as well as metal-matrix ceramic-reinforced nanocomposites (PUC-Rio), the growth of carbon nanotubes filled with magnetic metallic alloys (IPICyT-Mexico) and the study of magnetotactic bacteria containing chains of magnetite crystals known as magnetosomes (Universidade Federal de Rio de Janeiro). These various nanostructured materials are characterized using the advanced transmission electron microscope (TEM) facilities available at ASU. High-resolution electron microscopy and small-probe microanalysis are used to determine microstructure and elemental composition at the atomic scale, and electron holography is used to study the magnetic response and microstructure of the magnetic nanostructures.Exchange students and postdoctoral workers from Brazil and Mexico spend extended periods of time at ASU participating in the TEM experiments and gaining invaluable experience in advanced characterization methods. The ASU participants travel to the partner institutions in Brazil and Mexico to observe and participate in the materials synthesis and processing efforts, and also to conduct workshops on TEM characterization. All participants cooperate in organizing a symposium on the topic of "Atomic-Scale Control and Characterization of Nanostructured Systems" as part of the Brazilian Materials Research Society meeting to be held in Rio de Janeiro during 2005. Overall, this collaborative project serves to promote international exchange and cooperation and enable enhanced education and training opportunities. This award is supported by the Division of Materials Research, the Office of International Science and Engineering, and the Office of Multidisciplinary Activities in the Directorate for Mathematical and Physical Sciences.

这项美洲材料合作由亚利桑那州立大学(ASU)的David Smith、墨西哥圣路易斯·波托西Cientifica y Tecnologica研究所(IPICyT)的Humberto Terrones和巴西里约热内卢Catolica大学(PUC-Rio)的Guillermo Solorzano领导。互补性很强的研究工作的总体重点是纳米结构材料的合成、加工和原子尺度的表征。这些活动包括以Al、Ga、B和Si为基础的纳米氮化物颗粒的合成以及金属基陶瓷增强纳米复合材料的生长(PUC-RIO)、用磁性金属合金填充的碳纳米管的生长(IPICyT-墨西哥)以及对含有称为磁小体的磁铁矿晶体链的趋磁细菌的研究(里约热内卢联邦大学)。利用亚利桑那州立大学先进的透射电子显微镜设备对这些不同的纳米结构材料进行了表征。高分辨电子显微镜和小探针显微分析用于在原子尺度上确定微观结构和元素组成，电子全息术用于研究磁性纳米结构的磁响应和微观结构。来自巴西和墨西哥的交换生和博士后工作人员在亚利桑那州立大学长期参与透射电子显微镜实验，获得了宝贵的先进表征方法经验。亚利桑那州立大学的参与者前往巴西和墨西哥的伙伴机构，观察和参与材料合成和加工工作，并举办关于瞬变电磁特性的讲习班。作为将于2005年在里约热内卢举行的巴西材料研究会会议的一部分，所有与会者都合作组织了一次关于“纳米结构系统的原子尺度控制和表征”的专题讨论会。总体而言，这一合作项目有助于促进国际交流与合作，增加教育和培训机会。该奖项由材料研究部、国际科学和工程办公室以及数学和物理科学局的多学科活动办公室提供支持。