Collaborative Research: Processing and Assembly of Devices with Tailored Magnetic Properties

合作研究：具有定制磁性能的器件的加工和组装

• 批准号: 1436560
• 负责人: Thomas Crawford
• 金额: $ 26.33万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1436560&HistoricalAwards=false
• 关键词: Collaborative; Research; Processing; Assembly; Devices

Nanomaterials, materials with features ranging from 1-100 nm, have been developed with many unique properties, and a variety of techniques have been developed to produce these materials in large volumes at low cost. However to date, we lack commercial methods to incorporate these materials and their unique properties into novel devices, or to build these functions into materials over larger length scales. One particularly exciting collection of nanomaterials are composites that can use electricity to change magnetic properties and vice-versa. These materials could lead to the realization of new types of electronic devices, including new types of memory and data storage. In this project we seek to develop novel methods for synthesizing and assembling these materials into larger-scale optical devices that could find application in sensors, optical integrated circuits, and in data transmission and storage. Importantly, this effort includes research to measure and verify that these materials behave as designed once integrated into a manufactured device. Such quality control, especially monitoring during manufacturing, is critical to enable commercialization of these materials. This project combines the efforts of materials scientists at the University of Florida and physicists at the University of South Carolina to provide a unique interdisciplinary research environment for student researchers, critical for not only discovery but for future societal benefit for materials with properties that span multiple traditional scientific disciplines.This project addresses synthesis and assembly of devices built from multiferroic composite materials, i.e. materials that exhibit at least two, and sometimes three types of ferroic ordering in the same phase. In this project, activities center on biphasic fibers that combine a piezoelectric and a magnetostrictive material. The figure of merit for these multiferroics is the magnetoelectric coefficient, which measures the magnitude of the electric field generated when the multiferroic material is placed in an applied magnetic field. Using magnetic annealing and magnetic-field-directed self-assembly, research efforts will develop materials with enhanced magnetoelectric coefficients and assemble them into novel optical devices. In parallel, novel process metrologies will be implemented to characterize the properties of the fibers and devices built from them. These measurements will identify systematics and quantify magnetoelectric coupling in materials that are not amenable to more established characterization methodologies.

纳米材料，即具有1-100纳米特征的材料，具有许多独特的性能，并且已经开发出各种技术来以低成本大批量生产这些材料。然而，到目前为止，我们缺乏商业方法来将这些材料及其独特的特性整合到新的设备中，或者在更大的长度尺度上将这些功能构建到材料中。一种特别令人兴奋的纳米材料是复合材料，它可以利用电来改变磁性，反之亦然。这些材料可能导致实现新型电子设备，包括新型存储器和数据存储。在这个项目中，我们寻求开发新的方法来合成和组装这些材料到更大规模的光学器件中，这些器件可以在传感器、光学集成电路以及数据传输和存储中找到应用。重要的是，这项工作包括研究测量和验证这些材料一旦集成到制造设备中，其性能是否与设计一致。这种质量控制，特别是在制造过程中的监控，对于这些材料的商业化至关重要。该项目结合了佛罗里达大学的材料科学家和南卡罗来纳大学的物理学家的努力，为学生研究人员提供了一个独特的跨学科研究环境，这不仅对发现，而且对跨越多个传统科学学科的材料的未来社会效益至关重要。该项目涉及多铁性复合材料器件的合成和组装，即在同一阶段表现出至少两种，有时三种类型的铁性有序的材料。在这个项目中，活动集中在结合了压电和磁致伸缩材料的双相纤维上。这些多铁性材料的优点是磁电系数，它测量了当多铁性材料置于外加磁场中时产生的电场的大小。利用磁退火和磁场定向自组装，研究工作将开发具有增强磁电系数的材料，并将其组装成新型光学器件。与此同时，将实施新的工艺计量来表征光纤和由它们构建的设备的特性。这些测量将识别系统和量化材料中的磁电耦合，这些材料不适合更成熟的表征方法。