MRI: Acquisition of a SQUID magnetometer for analysis of advanced materials

MRI：购买 SQUID 磁力计用于分析先进材料

• 批准号: 1040006
• 负责人: Robert Meulenberg
• 金额: $ 39.1万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1040006&HistoricalAwards=false
• 关键词: MRI; Acquisition; SQUID; magnetometer; analysis

Technical Summary: Superconducting quantum interference device (SQUID) magnetometry is a non-destructive technique that reveals detailed information about the electron spin interactions in many types of materials. This project will involve a state-of-the-art SQUID magnetometer and Magnetic Property Measurement System (MPMS), which is a critical tool for characterizing several types of materials currently being investigated by researchers within the Laboratory for Surface Science & Technology (LASST) and other University of Maine (UMaine) laboratories. Specific measurement capabilities include DC and AC magnetic susceptibility, magnetoresistivity, van der Paaw conductivity, and Hall mobility. State-of-the-art MPMS capabilities will be especially valuable to several research programs at UMaine pertaining to (i) surface magnetism in nanoparticles, (ii) magnetic anisotropies in sedimentary rocks, (iii) electrical transport in physical and chemical sensing devices, (iv) optical properties of nanostructures in high magnetic fields, and (v) magnetic nanoparticle based biosensors. The MPMS will serve as a focal point for training undergraduates, graduate students, postdocs, and visiting scientists in magnetic materials, nanotechnology, biophysics, and materials science. This instrument is a critical tool for expanding the capacity of UMaine research into magnetic aspects of nanotechnology, biophysics, sensor technology, and materials science. As no SQUID magnetometer currently exists in the State of Maine, the instrumentation will provide access for research projects from interested parties throughout the state, including non-Ph.D. granting institutions and small Maine businesses. The instrument is relatively easy to operate and provides direct information on electron spin interactions, and thus it will be a powerful tool to teach physics and nanotechnology concepts to several different constituents participating in UMaine outreach activities, including K-12 students and teachers, the general public, under-represented groups, and industry partners.Layman Summary: Superconducting quantum interference device (SQUID) magnetometry is a non-destructive technique that reveals detailed information about the electron spin interactions in many types of materials. Knowledge of electron interactions in materials is extremely important in building the next generation of computers, electronics, and contrast agents in biological magnetic screening techniques (i.e. MRI). To gain the necessary information, a system with control over both the magnetic field strength and temperature is critical. To this end, a SQUID/Magnetic Property Measurement System (MPMS) is ideal for these measurements. This project will purchase a state-of-the-art MPMS system and will be especially valuable to several research programs at UMaine pertaining to surface magnetism in nanoparticles, magnetic anisotropies in sedimentary rocks, electrical transport in physical and chemical sensing devices, and magnetic nanoparticle based biosensors. The proposed MPMS will serve as a focal point for training undergraduates, graduate students, postdocs, and visiting scientists in magnetic materials, nanotechnology, biophysics, and materials science. As no SQUID magnetometer currently exists in the State of Maine, the instrumentation will provide access for research projects from interested parties throughout the state, including non-Ph.D. granting institutions and small Maine businesses. The instrument is relatively easy to operate and provides direct information on electron spin interactions, and thus it will be a powerful tool to teach physics and nanotechnology concepts to several different constituents participating in UMaine outreach activities, including K-12 students and teachers, the general public, under-represented groups, and industry partners.

技术摘要：超导量子干涉装置 (SQUID) 磁力测量是一种无损技术，可揭示多种材料中电子自旋相互作用的详细信息。 该项目将涉及最先进的 SQUID 磁力计和磁特性测量系统 (MPMS)，这是表征表面科学与技术实验室 (LASST) 研究人员目前正在研究的几种材料的关键工具和其他缅因大学 (UMaine) 实验室。 具体的测量功能包括直流和交流磁化率、磁阻、范德堡电导率和霍尔迁移率。 最先进的 MPMS 功能对于缅因大学的几个研究项目尤其有价值，这些研究项目涉及 (i) 纳米粒子的表面磁性，(ii) 沉积岩中的磁各向异性，(iii) 物理和化学传感设备中的电传输， （iv）高磁场中纳米结构的光学特性，以及（v）基于磁性纳米颗粒的生物传感器。 MPMS 将成为磁性材料、纳米技术、生物物理学和材料科学领域本科生、研究生、博士后和访问科学家的培训中心。该仪器是扩大缅因大学在纳米技术、生物物理学、传感器技术和材料科学的磁性方面的研究能力的关键工具。 由于缅因州目前没有 SQUID 磁力计，该仪器将为全州感兴趣的各方（包括非博士生）的研究项目提供访问权限。资助机构和缅因州小型企业。该仪器相对易于操作，并提供有关电子自旋相互作用的直接信息，因此它将成为向参与缅因大学外展活动的多个不同群体（包括 K-12 学生和教师、一般学生）教授物理和纳米技术概念的有力工具。外行摘要：超导量子干涉装置 (SQUID) 磁力测量是一种非破坏性技术，可揭示多种材料中电子自旋相互作用的详细信息。 材料中电子相互作用的知识对于构建下一代计算机、电子产品和生物磁筛选技术（即 MRI）中的造影剂极其重要。 为了获得必要的信息，能够控制磁场强度和温度的系统至关重要。 为此，SQUID/磁性测量系统 (MPMS) 是这些测量的理想选择。 该项目将购买最先进的 MPMS 系统，对于缅因大学的几个研究项目特别有价值，涉及纳米粒子的表面磁性、沉积岩的磁各向异性、物理和化学传感装置中的电传输以及磁性纳米粒子基于生物传感器。 拟议的 MPMS 将作为磁性材料、纳米技术、生物物理学和材料科学领域本科生、研究生、博士后和访问科学家的培训中心。 由于缅因州目前没有 SQUID 磁力计，该仪器将为全州感兴趣的各方（包括非博士生）的研究项目提供访问权限。资助机构和缅因州小型企业。该仪器相对易于操作，并提供有关电子自旋相互作用的直接信息，因此它将成为向参与缅因大学外展活动的多个不同群体（包括 K-12 学生和教师、一般学生）教授物理和纳米技术概念的有力工具。公众、代表性不足的群体和行业合作伙伴。