NIRT: Nuclear hyperpolarization for organic and inorganic semiconductor nanostructures

这项工作将使用光泵浦（OP）和自旋注入（SI）方法来产生大量的非热核自旋极化，用于纳米结构半导体器件。提出的研究旨在对大量材料中的电子-核交叉弛豫有一个基本的理解，这些材料被设计成具有从体到中尺度到量子点的结构特征。在这些研究的过程中，预计在新的无机和聚合物半导体结构中以核自旋超极化形式出现的新现象学，以及用于测量核极化的新分析工具的发展。这项工作将使用OP和SI的新发展的理解来设计新的应用实验和设备。所提议的工作的智力价值在于断言测量和观察在发展对自然世界的理解方面具有内在的和基本的价值。对核超极化的更全面的理解可以通过提供大大增强信号的机制以及协助创建自旋电子学和量子计算设备来潜在地克服当前分析光谱方法（即NMR，MRI）的局限性。拟议的研究预计将有广泛的教育成果，因为它将为学生提供独特的跨学科科学教育，并接触不同背景和互补背景的团队。来自纽约州立大学和加州大学伯克利分校的本科生将参与这项研究，并将在夏天访问另一个校区，以拓宽他们的科学视野。这项研究还将通过一系列的研讨会讨论课程，在本科教育的关键时刻启发新生。中国人民大学和加州大学伯克利分校之间的远程研讨会和小组会议将被用来确保财团的协同作用。

This work will use optical pumping (OP) and spin-injection (SI) methods togenerate massively athermal nuclear spin polarizations for exploitation in nanostructuredsemiconductor devices. The proposed research aims to develop a fundamentalunderstanding of the electron-nuclear cross relaxation in a host of materials engineered toexhibit structural features ranging from bulk to mesoscale to quantum dots. In the courseof these studies, new phenomenology in the form of nuclear spin hyperpolarization innovel inorganic and polymeric semiconductor structures is anticipated as well as thedevelopment of new analytical tools for the measurement of nuclear polarization. Thiswork will use the newly developed understanding of OP and SI to design new applicationexperiments and devices.The intellectual merit of the proposed work lies in the assertion that measurementand observation are of intrinsic and fundamental value in developing an understanding ofthe natural world. A more complete understanding of nuclear hyperpolarization couldpotentially overcome limitations in current analytical spectroscopic methods (i.e., NMR,MRI) by providing the mechanism for greatly enhanced signals as well as assist in thecreation of spintronics and quantum computing devices.The proposed research is expected to have a broad educational outcome because itwill offer students a unique inter-disciplinary scientific education and exposure to teamsof diverse and complimentary backgrounds. Undergraduate students from both CCNYand UC Berkeley will be involved in the research and will spend summers visiting thealternate campus to broaden their scientific horizons. This research will also be used toinspire freshmen during a pivotal point of their undergraduate education through a seriesof seminar discussion courses. Long-distance seminars and group meetings between theCCNY and UC Berkeley groups will be used to ensure the synergistic nature of theconsortium.