Wide-field magnetic imager with nanoscale resolution

具有纳米级分辨率的宽视场磁成像仪

• 批准号: 1408075
• 负责人: Ronald Walsworth
• 金额: $ 36万
• 依托单位: Smithsonian Institution Astrophysical Observatory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1408075&HistoricalAwards=false
• 关键词: Wide; field; magnetic; imager; nanoscale

The objective of this project is the development of a high-sensitivity, wide-field diamond-based magnetic field imaging instrument suitable for applications in the physical and biological sciences. The approach is based on coherent microwave and optical manipulation of Nitrogen-Vacancy color centers implanted in a thin layer at the surface of a diamond chip. The Nitrogen-Vacancy center in diamond has emerged as a promising tool for quantum information, sensing, and metrology due to its long electronic spin coherence time at room temperature, and an unusual energy level structure that allows convenient optical spin polarization and readout. Recent work has demonstrated the potential of ensembles of Nitrogen-Vacancy centers for sensitive detection and imaging of stationary and time-varying magnetic fields, including those produced by biological samples. The intellectual merit of this program is the translation of techniques from fundamental quantum science into the development of a solid-state, room temperature magnetic imager with a combination of nanoscale spatial resolution, wide field-of-view, and excellent magnetic field sensitivity that cannot be obtained with any other technology. In addition, the unique physical properties of diamond (hardness, high thermal conductivity, optical transparency), together with its chemical inertness and excellent biocompatibility, make the diamond magnetic imager particularly well suited for sensing and imaging applications in materials science and biology.The broader impacts of this program include: (i) applying the diamond magnetic imager to a wide variety of physical and biological problems, e.g., probing magnetic order and domain structure in low-dimensional systems such as graphene, anti-ferromagnetic, and multiferroic materials, as well as minimally-invasive imaging of functional activity and magnetic structures in living cells such as magnetotactic bacteria; (ii) providing interdisciplinary training to students in condensed matter physics, nanoscience, optical imaging techniques, and quantum information science, as well as in application areas such as surface science and bioimaging, with a particular focus on inclusion of members of underrepresented groups in science and engineering; and (iii) performing outreach by communicating to a wider audience the exciting interdisciplinary nature of the proposed instrument development and the research it will enable, through public lectures, websites, magazine articles, and undergraduate course material.

该项目的目的是开发适用于物理和生物科学中应用的高敏性，宽场钻石磁场成像仪器。 该方法基于一致的微波炉和光学操纵，对植入钻石芯片表面的薄层植入的氮呈色中心。 由于其长长的电子自旋相干时间在室温下，钻石中的氮 - 视口中心已成为一种有前途的量子信息，传感和计量的有前途的工具，并且具有不寻常的能量水平结构，可以方便地进行光学自旋极化和读数。 最近的工作证明了氮 - 视口中心的合并对固定和时变磁场的敏感检测和成像，包括生物样品产生的磁场。 该程序的智力优点是从基本量子科学转化为固态，室温磁成像仪的开发，具有纳米级空间分辨率，广泛的视野和出色的磁场灵敏度的结合可以通过任何其他技术获得。 此外，钻石的独特物理特性（硬度，高导热率，光学透明度）以及其化学惰性和出色的生物相容性，使钻石磁成像仪特别适合于材料科学和生物学中的传感和成像应用。该程序的影响包括：（i）将钻石磁成像仪应用于多种物理和生物学问题，例如，在低维系统（例如石墨烯，抗有效性材料）等低维系统中探测磁顺序和域结构，例如以及活细胞中功能活性和磁性结构（如磁性细菌）的最小侵入性成像； （ii）在凝结物理学，纳米科学，光学成像技术和量子信息科学以及表面科学和生物成像等应用领域中，向学生提供跨学科培训和工程； （iii）通过向更广泛的观众进行沟通来进行宣传，这是拟议的仪器开发的令人兴奋的跨学科性质，以及它将通过公开讲座，网站，杂志文章和本科课程材料来实现的研究。