EAGER: The First Steps toward Giant Magnetoresistive Carbon Nanocomposites

EAGER：迈向巨磁阻碳纳米复合材料的第一步

• 批准号: 1314486
• 负责人: Zhanhu Guo
• 金额: $ 8.41万
• 依托单位: Lamar University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-03-01 至 2015-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1314486&HistoricalAwards=false
• 关键词: EAGER; First; Steps; toward; Giant

This EArly Grant for Exploratory Reserach (EAGER) award provides funding for exploration preparation of novel giant magnetoresistance (GMR) magnetic carbon nanocomposites by combining the stability of carbon and strong magnetization of metal nanoparticles, potentially providing promising alternatives to the traditional metal GMR materials. This project will involve the surface functionalization of commercial magnetic nanoparticles and will evaluate the feasibility of the large scale production of carbon nanocomposites. The stabilization, carbonization and graphitization conditions needed to treat these polymer nanocomposites will be determined to allow the large scale manufacturing of GMR magnetic carbon nanocomposites. The feasibility of using graphitic carbon to protect magnetic nanoparticles against oxidation will be tested and process-structure-property relationships will be established.If successful, the research will provide novel magnetic carbon nanocomposites for magnetic field sensing, and also will unveil the nature of the electron magneto-transport in these novel GMR materials. This will advance the knowledge required to manufacture next-generation GMR materials and provide transformative sensing nanotechnology. As compared to the easy oxidation of conductive metals, magnetic carbon nanocomposites may potentially be applied in telecoms, electronics, sensors, anode catalysts and the aerospace industry, due to their easy manufacturing, better mechanical properties, high stability in acids, and isotropic properties. They also have potential for device miniaturization and light weight. The success of this EAGER project will provide initial evaluations on these GMR magnetic carbon nanocomposites for magnetic field sensing in harsh environments and make their deployment more attractive to both industrial researchers and academic scientists.

这项探索性研究（EAGER）早期资助为新型巨磁阻（GMR）磁性碳纳米复合材料的探索制备提供了资金，该材料结合了碳的稳定性和金属纳米颗粒的强磁化，有可能为传统金属GMR材料提供有前途的替代品。该项目将涉及商用磁性纳米颗粒的表面功能化，并将评估大规模生产碳纳米复合材料的可行性。将确定处理这些聚合物纳米复合材料所需的稳定、碳化和石墨化条件，以便大规模制造GMR磁性碳纳米复合材料。将测试使用石墨碳保护磁性纳米颗粒免受氧化的可行性，并建立工艺-结构-性能关系。如果成功，该研究将提供用于磁场传感的新型磁性碳纳米复合材料，并将揭示这些新型GMR材料中电子磁输运的性质。这将推进制造下一代GMR材料所需的知识，并提供变革性的传感纳米技术。与易于氧化的导电金属相比，磁性碳纳米复合材料由于其易于制造、更好的机械性能、在酸中的高稳定性和各向同性的性能，可能潜在地应用于电信、电子、传感器、阳极催化剂和航空航天工业。它们还具有设备小型化和轻量化的潜力。EAGER项目的成功将为这些GMR磁性碳纳米复合材料在恶劣环境下的磁场传感提供初步评估，并使它们的部署对工业研究人员和学术科学家更具吸引力。