Collaborative Research: Development of a turnkey SQUID microscope platform for paleomagnetism and installation in a National Multi-User Facility

合作研究：开发用于古地磁学的交钥匙 SQUID 显微镜平台并安装在国家多用户设施中

• 批准号: 1905733
• 负责人: Eduardo Andrade Lima
• 金额: $ 41.36万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-15 至 2024-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1905733&HistoricalAwards=false
• 关键词: Collaborative; Research; Development; turnkey; SQUID

Rocks preserve important records of ancient geomagnetic fields. However, some records have remained inaccessible due to complex magnetic histories and mineralogy. The main goals of this collaborative project are to develop and build a magnetic microscope at MIT to measure paleomagnetic records in Earth rocks and other geological samples and to upgrade a second instrument at Caltech to enable these measurements. These will share a common platform that will expand paleomagnetic research opportunities nationally and enable independently verifying results. In addition, details of the platform will be disseminated to the scientific community to enable a broad range of applications.Many rocks that might preserve important records of ancient geomagnetic fields have remained inaccessible due to a combination of intricate magnetic histories and complex mineralogies. The main goals of this collaborative project are to develop and build a new Scanning Superconducting QUantum Interference Device (SQUID) Microscope (SSM) platform at MIT to measure paleomagnetic records in Earth rocks and other geological samples and to upgrade a second instrument at Caltech to enable these measurements. These will share a common platform that will allow for conducting multiple research projects from different research groups concurrently and for independently verifying results. In addition, details of the platform will be disseminated to the scientific community to enable a broad range of applications. This new SSM will have a unique combination of capabilities, which include cryogen-free operation for lower costs and long uninterrupted use, magnetic moment sensitivity of better than 1x10^-15 Am2, and spatial resolution of 100 micrometers. It will map the component of the magnetic field normal to the sample plane in a grid of positions with area up to 50 mm x 50 mm and with scanning speed of up to 5 mm/s.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

岩石保存着古代地磁场的重要记录。然而，由于复杂的磁史和矿物学，一些记录仍然无法获得。这个合作项目的主要目标是在麻省理工学院开发和建造一个磁显微镜来测量地球岩石和其他地质样本中的古地磁记录，并升级加州理工学院的第二个仪器来进行这些测量。它们将共享一个共同的平台，这将扩大全国古地磁研究的机会，并使独立验证结果成为可能。此外，该平台的细节将向科学界传播，以实现广泛的应用。由于复杂的磁性历史和复杂的矿物学，许多可能保存古代地磁场重要记录的岩石仍然无法进入。这个合作项目的主要目标是在麻省理工学院开发和建立一个新的扫描超导量子干涉装置（SQUID）显微镜（SSM）平台，以测量地球岩石和其他地质样品中的古地磁记录，并升级加州理工学院的第二台仪器，以实现这些测量。它们将共享一个共同的平台，允许同时进行来自不同研究小组的多个研究项目，并独立验证结果。此外，该平台的细节将向科学界传播，以实现广泛的应用。这种新型SSM将具有独特的功能组合，包括无低温操作，降低成本和长时间不间断使用，磁矩灵敏度优于1 × 10^-15 Am2，空间分辨率为100微米。它将在面积达50mm x 50mm的位置网格中绘制与样品平面垂直的磁场分量，扫描速度可达5mm /s。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。