NER: Novel Chiral Architectures of Magnetic Nanowires

NER：磁性纳米线的新型手性结构智力优势：本研究的目的是创造具有磁性纳米级手性（螺旋）内部结构的复合材料。复合材料将使用嵌入在主体材料中的纳米线制造。一项基于旋转外加磁场和局部加热/冷却的新技术将使纳米线重新排列成手性畴。复合材料的磁性和光学性质不仅取决于单个纳米线的性质（组成、尺寸和形状），还取决于它们的排列方式。这些性质将被研究，以建立电磁响应与微米和纳米尺度结构之间的关系。这个项目将推进复杂的磁性和光学耦合纳米结构的科学，并可能为创造具有自然材料中没有的特性（如负折射）的材料提供一条途径。更广泛的影响：磁性纳米结构的制造和理解对电子设备的未来发展至关重要。提出的手性结构将为光学、磁光和微波频率应用的工程材料提供额外的灵活性。潜在的应用是高密度信息存储、微波器件和纳米光子学。卡特里娜飓风过后，纳米技术等新兴高科技领域的研究和教育对重建路易斯安那州东南部的经济至关重要。该项目是新奥尔良大学先进材料研究所（AMRI）现有纳米科学研究和教育活动的延伸。这种联合推广的努力使当地HBCU的本科生能够进行研究，并在高中阶段提高科学和技术的意识。

NER: Novel Chiral Architectures of Magnetic NanowiresIntellectual Merit: The objective of this research is to create composite materials with magnetic nanometer-scale chiral (helical) internal structure. The composites will be fabricated using nanowires embedded in a host material. A new technology based on a rotating applied magnetic-field along with localized heating/cooling will rearrange the nanowires into chiral domains. The magnetic and optical properties of the composite will depend not only on the properties of individual nanowires (composition, size and shape) but also on their arrangement. These properties will be investigated to establish a relationship between the electromagnetic response and the micrometer and nanometer scale structure. This project will advance the science of complex magnetic and optically coupled nanostructures and may provide a route for creating materials with properties not found in natural materials, like negative refraction.Broader Impacts: The fabrication and understanding of magnetic nanostructures is essential for the future development of electronic devices. The proposed chiral architecture will provide additional flexibility when engineering materials for optical, magneto-optical and microwave frequency applications. Potential applications are high-density information storage, microwave devices and nanophotonics. In the wake of hurricane Katrina, research and education in emerging high-tech fields like nanotechnology is important to rebuilding southeast Louisiana's economy. The project is an extension of the existing nanoscience research and educational activities of the Advanced Materials Research Institute (AMRI) at the University of New Orleans. The combined outreach efforts allow undergraduate students from the local HBCU's to conduct research and increase the awareness of science and technology at the high school level.