Development of a Variable Temperature Magnet Scanning Evanescent Microwave Microscope for Studying Novel Nanostructures and for the Training of Students

该奖项将为超高真空（UHV）兼容扫描倏逝微波显微镜（SEMM）的开发提供部分支持，该显微镜具有可变温度样品台和超导磁体，用于研究新型纳米尺度材料的结构、磁性和导电性。这是北卡罗来纳大学教堂山分校（UNC-CH）、劳伦斯伯克利国家实验室（LBNL）和Ariel技术公司的研究人员共同努力的成果。所提出的仪器是一种独一无二的扫描探针显微镜（SPM），能够在磁场和低温下以纳米级分辨率测量微波响应。调制磁场和变温的能力将大大扩展当前SEMM技术的能力，包括扫描探针磁共振实验。该仪器将为材料研究界提供强大而多功能的功能，并将成为北卡罗来纳大学纳米级材料活动的重要组成部分。拟开展的研究活动包括：(1)利用组合方法合成金属薄膜和多层膜的空间分辨微波共振实验；(2)掺杂钙钛矿的空间分辨介电和导电特性；(3)SEMM作为介观和纳米导体中量子效应的探针；(4)植物光合作用复合物的磁拓扑结构。目的是阐明纳米尺度材料的结构和磁激励。该奖项将为学生、研究人员和私营部门合作伙伴之间的密切互动提供重要机会，并为参与者参与科学和技术的重大进步做出重大贡献。这一多机构合作活动预计将对科学、教育和伙伴关系产生重大影响。

9976852TsuiThis award will provide partial support for the development of an ultrahigh vacuum (UHV) compatible scanning evanescent microwave microscope (SEMM) with a variable temperature sample stage and a superconducting magnet to study structural, magnetic, and conduction properties of novel nanometer scale materials. It is a collaborative effort between researchers at theUniversity of North Carolina at Chapel Hill (UNC-CH), Lawrence Berkeley National Lab (LBNL), and Ariel Technologies, Inc.The proposed instrument is a one-of-the-kind scanning probe microscope (SPM) capable of measuring microwave response with nanometer scale resolution in a magnetic field and at low temperatures. The ability to modulate magnetic field and to varytemperature will expand the capabilities of the current SEMM technique significantly, including scanning probe magnetic resonance experiments. The instrument will provide powerful but versatile capabilities for the materials research community and it also will serve as a vital part of the nanometer scale materials activities at UNC-CH. Proposed research activities include (1) spatially resolved microwave resonance experiments on metallic thin films and multilayers synthesized using combinatorial approach, (2) spatially resolved dielectric and conduction properties of doped perovskites, (3) SEMM as a probe of quantum effects in mesoscopic and nanometer conductors, (4) magnetic topology of photosynthesis complex of plants. The goal is to elucidate the structural and magnetic excitations in nanometer scale materials.This award will provide significant opportunities for strong interactions between students, researchers, and private sectorpartners, and for participants to get involved with and to make significant contributions to significant advances in science and technology. &&&This multi-institutional collaborative activity is expected to significantly impact science, education, and partnerships.