Research Initiation: Fundamental Studies & Device Applications of Superconductors at Rf, Microwave & MM-Wave Frequencies (REU Supplement)

研究启动：基础研究

• 批准号: 8811254
• 负责人: Srinivas Sridhar
• 金额: --
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-15 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8811254&HistoricalAwards=false
• 关键词: Research; Initiation; Fundamental; Studies; &amp

This Research Initiation Award focusses on high frequency electromagnetic studies of high-transition-temperature superconductors, between frequencies covering "dc" to 75 GHz. The proposed work involves: (1) Fundamental studies of the electromagnetic response via measurements of the surface resistance and the penetration depth as functions of temperature, frequency and applied magnetic field. The results will be interpreted to yield fundamental information regarding the nature of the superconducting state, and the dynamics of vortices and fluxoids in these materials. (2) Materials fabrication and processing in bulk monolithic, single crystal forms and also coatings. The effects of materials processing on the ideal high frequency response of the superconductors will be studied. (3) Fabrication and testing of devices in bulk monolithic and coated forms. The specific devices that will be studied are: high Q fully superconducting cavities at microwave and mmwave frequencies, interdigital filters, and waveguides at X-band and higher frequencies. the device performance will be determined, correlated with expected ideal estimates, and the effects of materials processing will be examined.

该研究启动奖侧重于高频率 高转变温度的电磁研究 超导体，频率覆盖之间的“直流”到75千兆赫。 的 拟开展的工作包括：（1）电磁场的基础研究 响应通过测量表面电阻和 作为温度、频率和应用的函数的穿透深度 磁场 结果将被解释为产生基本的 关于超导状态的性质的信息，以及 在这些材料中的旋涡和流体动力学。(2)材料 以大块单片单晶形式的制造和加工 以及涂层。 材料加工对理想的 将研究超导体的高频响应。 （三） 整体和涂层器件的制造和测试 forms. 将研究的具体器件有：高Q全 微波和毫米波频率的超导腔， 叉指滤波器和X波段及更高频率的波导。 将确定器械性能，与预期的 理想的估计，材料加工的影响将是 考察