MRI: Acquisition of a Cryogen-Free, State-of-the-Art, Superconducting Quantum Interference Device (SQuID) Magnetometer

MRI：购买最先进的无冷冻剂超导量子干涉装置 (SQuID) 磁力计

• 批准号: 1625776
• 负责人: Sarah Tolbert
• 金额: $ 28.27万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1625776&HistoricalAwards=false
• 关键词: MRI; Acquisition; Cryogen; Free; State

With this award from the Major Research Instrumentation Program (MRI) and support from the Chemistry Research Instrumentation Program (CRIF), Professor Sarah Tolbert from the University of California Los Angeles and colleagues Louis Bouchard, Greg Carman, Jane Chang and Alexander Spokoyny have acquired a cryogen-free, state-of-the-art, superconducting quantum interference device (SQuID) magnetometer. This instrument consists of two superconductors separated by very thin insulating layers. Such a magnetometer is capable of detecting very small magnetic fields including those produced in living organisms. The magnetic flux is controlled by voltage variations using either direct (DC) or alternating voltages (AC). To be able to measure such small variations in magnetic fields, the instrument operates at very low temperatures achieved with the use of liquid helium, a limited resource. To avoid waste of such a valuable element, this instrument recycles the helium making it cryogen (coolant) free. This magnetometer is placed in a user facility and plays a role in the development of human resources in scientific research. It enriches the research experience of many graduate students, postdoctoral fellows and undergraduate researchers. It serves as a resource for users across the California State University System which is heavily populated by underrepresented students. In general, magnetometers have very diverse applications, ranging from locating submerged metal-containing ship wrecks and submarines to measuring Earth's magnetic fields to measuring tiny magnetic fields in the brain or heart.The award is aimed at enhancing research and education at all levels, especially in areas such as (a) understanding thermogravimetric materials for thermal energy harvesting; (b) studying magnetic states in condensed matter systems; (c) studying boron-rich clusters as building blocks for molecular and organic magnets; (d) exploring the use of multiferroic materials for spintronic devices; (e) studying single molecule magnets; (f) studying quantum anomalous half effect and topological superconductors, and (g) applying multiferroics as new materials.

在重大研究仪器计划（MRI）和化学研究仪器计划（CRIF）的支持下，加利福尼亚大学洛杉矶分校的Sarah Tolbert教授和同事Louis Bouchard，Greg Carman，Jane Chang和Alexander Spokoyny获得了无效的，是无哭泣的，是较低哭泣的，是校园的，超过的量级互动设备（Squidspection Interperection Interperection（Squive）。该仪器由两个由非常薄的绝缘层隔开的超导体组成。这样的磁力计能够检测到非常小的磁场，包括在生物体中产生的磁场。使用直接（DC）或交替电压（AC）控制磁通量。为了能够测量磁场中的如此小的变化，该仪器在使用液氦气（有限的资源）时以非常低的温度运行。为了避免浪费这种有价值的元素，该仪器可以回收氦气，使其无雪茄（冷却液）。该磁力计放置在用户设施中，并在科学研究中的人力资源发展中发挥作用。它丰富了许多研究生，博士后研究员和本科研究人员的研究经验。它为加利福尼亚州立大学系统的用户提供了资源，该系统由代表性不足的学生大大增加。通常，磁力仪具有非常多样化的应用，从定位含淹没金属的船舶残骸和潜艇到测量地球磁场到测量大脑或心脏中的微小磁场。 （b）在凝结物质系统中研究磁性； （c）研究富含硼的簇作为分子和有机磁铁的基础； （d）探索用于旋转设备的多效材料的使用； （e）研究单分子磁铁； （f）研究量子异常的一半效应和拓扑超导体，以及（g）将多表情用作新材料。