Acquisition of NMR Spectrometer, Ultralow Temperature Cryostats, and Active Shielding for a 16 Tesla/120 mm RT Bore Superconducting Magnet

9977656 Barrett核磁共振(核磁共振)谱是一种强大的局部探测物质的电子和结构性质的探测器，在物理、材料科学、地质、化学、生物和医学中有广泛的应用。在重大研究仪器计划的资助下，PI将创建一种独特的核磁共振系统，能够产生极高的磁场和超低温。该系统的基础是耶鲁大学最近购买的15.8特斯拉/120毫米室温孔超导核磁共振磁体。这种磁铁的核磁共振质量规格，再加上它的超宽口径和强大的磁场，开辟了全新的实验前沿。重大研究仪器公司的资金将用于购买完成该系统所需的其他部件：主动屏蔽升级、定制核磁共振光谱仪和超低温实验低温恒温器。利用该系统进行的研究活动将跨越几个不同的领域、学术部门，以及耶鲁和哥伦比亚两所大学。这些项目包括：1)纳米材料的研究，如GaN，GaAs量子阱的外延薄膜；2)小型生物样品(如小鼠和大鼠)的磁共振显微镜；3)光泵浦对某些生物样品的光谱的影响，以解决长期以来关于光合作用反应中心的光反应的效率和特异性的问题；4)将各种固体核磁共振测量扩展到超低温，以提高灵敏度和简化光谱。改进后的仪器将以几种方式加强学生、博士后、研究生和本科生的研究培训经验，包括关于最先进仪器的动手培训和使用该仪器进行的研究项目的结果进入课堂。主要研究仪器计划的资金将用于获得将用于完成最先进的核磁共振系统的部件。该系统将被大学内以及附近大学的一系列研究人员使用。它还将对从博士后到本科生的学生的研究培训产生影响

9977656Barrett Nuclear magnetic resonance (NMR) spectroscopy is a powerful local probe of the electronic and structural properties of matter, with applications in physics, materials science, geology, chemistry, biology, and medicine. With Major Research Instrumentation program funding, the PI will create a unique nuclear magnetic resonance system, capable of producing both extremely high magnetic fields and ultralow temperatures. The foundation of the proposed system is a 15.8 Tesla / 120 mm room temperature bore superconducting NMR magnet, recently purchased by Yale University. The NMR-quality specifications of this magnet, combined with its super-wide bore diameter and its strong field, open up entirely new experimental frontiers. The Major Research Instrumentation funds will be used to acquire the other components necessary to complete the system: an active shielding upgrade, a custom NMR spectrometer, and ultralow temperature experimental cryostats. The research activities that will be conducted with this system span several different fields, academic departments, as well as two universities, Yale and Columbia. These projects include: 1) the study of nanoscale materials, e.g., epitaxial thin films of GaN, GaAs quantum wells; 2) magnetic resonance microscopy of small biological samples (such as mice and rats); 3) the effect of optical pumping on the spectra of certain biological samples, to address long-standing questions about the efficiency and specificity of photoreactions in the photosynthetic reaction center; 4) extending a wide-variety of solid-state NMR measurements down to ultralow temperatures, to boost sensitivity and to simplify spectra. The improved instrumentation will enhance research training experiences for students, postdoctoral, graduate, and undergraduate, in several ways, including hand-on training on state-of-the-art instrumentation and the results of research projects carried out with this instrument finding its way into the classroom.Funds from the Major Research Instrumentation program will be used to acquire components that will be used to complete the state-of-the-art NMR system. The system will be used by a range of researchers within the university as well as at nearby universities. It will also have an impact on the research training of students, from post doctoral to undergraduates