MRI: Development of a Scanning-Probe-Assisted Confocal Microscope for Investigating Optical and Magnetic Properties and Phenomena

非技术说明：该仪器项目是开发一种扫描探针辅助荧光显微镜，用于在不同温度下以及在微米和纳米长度尺度上同时进行材料的热、机械、磁共振和光学测量。互补的成像技术集成到一个具有长时间稳定温度控制的单一平台中，使纳米级研究能够探索具有新兴科学和技术重要性的新材料和设备，如纳米级传感和信息处理。作为一个整体，该项目汇集了一个研究团队，在固态物理，光学和纳米工程互补的专业知识。此外，它为学生和博士后研究人员提供跨学科教育，并能够与广泛的合作研究小组网络进行互动。这些合作伙伴关系不仅提供了一个广泛的传播平台，也使主要研究人员能够推进正在进行的努力，招募和培训来自科学代表性不足的社区的学生。技术说明：该仪器的核心是一个封闭循环的低温工作站，通过与热板接触进行可变温度操作（4 K至350 K），该热板旨在最大限度地减少低温泵的振动。一组精密载物台允许用户控制激发激光束、扫描探针和样品的相对位置。一个微型电磁体被用来产生一个可变振幅和方向的磁场，而一个平坦的、玻璃压印的波导管用作谐振微波和/或射频的源。受益于这一仪器的研究领域包括：（一）使用二维半导体研究单光子发射器，（二）研究金刚石中的载流子自旋动力学，（三）开发纳米级磁共振成像和光谱学的新协议，（四）相变材料的表征和控制，（v）磁性纳米结构中磁等离子体和自旋波效应的研究，以及（vi）拓扑光子超材料中单光子动力学的理解。

Non-Technical Description:This instrument project is on development of a scanning-probe-assisted fluorescence microscope for simultaneous thermal, mechanical, magnetic resonance, and optical measurements of materials at variable temperatures and over micrometer and nanometer length scales. The complementary imaging techniques, integrated into a single platform with long-time, stable temperature control, enable nanoscale research that explores new materials and devices of emerging scientific and technological importance such as nanoscale sensing and information processing. As a whole, this project brings together a team of researchers with complementary expertise in sold-state physics, optics, and nano-engineering. Further, it offers students and postdoctoral researchers interdisciplinary education and the ability to interact with a wide network of collaborating research groups. These partnerships not only provide a broad dissemination platform but also allow the principal investigators to advance ongoing efforts to recruit and train students from communities under-represented in science.Technical Description:At the heart of this instrument is a closed-cycle cryo-workstation for variable temperature operation (4 K to 350 K) via contact to a thermal plate designed to minimize vibrations from a cryo-pump. A set of precision stages allows users to control the relative positions of the excitation laser beam, the scanning probe, and the sample. A miniature electromagnet is used to create a magnetic field of variable amplitude and direction, whereas a flat, glass-imprinted wave-guide serves as the source of resonant microwave and/or radio-frequency. The areas of research benefiting from this instrument include (i) the investigation of single photon emitters using two-dimensional semiconductors, (ii) the study of carrier spin dynamics in diamond, (iii) the development of new protocols for magnetic resonance imaging and spectroscopy at the nanoscale, (iv) the characterization and control of phase-change materials, (v) the investigation of magneto-plasmonic and spin-wave effects in magnetic nanostructures, and (vi) the understanding of single-photon dynamics in topological photonic metamaterials.