ROW: Fabrication of High Tc Superconductor Thin-Film Micro- bridges for Millimeter-Wave Detection and Mixing

ROW：用于毫米波检测和混合的高温超导薄膜微桥的制造

• 批准号: 8908533
• 负责人: Zeynep Celik-Butler
• 金额: $ 5.44万
• 依托单位: Southern Methodist University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8908533&HistoricalAwards=false
• 关键词: ROW; Fabrication; Tc; Superconductor; Thin

The PI will prepare high-transition temperature superconductive films by deposition onto cooled substrates. Reactive sputtering and hot oxygen jet sputter fabrication techniques will be employed to produce as-deposited high-quality YBa2Cu3O7-x thin-films. After the initial investigation of the composition, microstructure and the DC electrical properties, these films will be patterned into variable thickness microbridges for millimeter-wave detection and mixing applications. Special emphasis will be given to the repeatability of the fabrication process as it applies to the transition temperature, critical current, and properties under radiation. In the second stage of the investigation, the microbridges will be used as heterodyne detectors in the millimeter-wave range. We have in our laboratories a good collection of active devices (sources, oscillators, detectors, mixers, isolators) and passive components in the 94 GHz range. The first goal will be to investigate the microwave properties of the microbridges by pumping with an rf source at this frequency. Then the microbridge will be operated as a mixer. The conversion efficiency, and mixer noise will be measured.

PI将通过沉积在冷却的底物上制备高转移温度超导膜。 反应性溅射和热氧射流溅射技术将采用生产高质量的高质量YBA2CU3O7-X薄膜。 在对组成，微结构和直流电性能的初步研究后，这些膜将被图案化为可变的厚度微生物，以用于毫米波检测和混合应用。 将特别强调制造过程的重复性，以适用于辐射下的过渡温度，临界电流和特性。 在调查的第二阶段，微晶体将用作毫米波范围内的杂化探测器。 在实验室中，我们在94 GHz范围内拥有良好的主动设备（来源，振荡器，探测器，混合器，隔离器）和被动组件的良好集合。 第一个目标是通过以此频率泵送RF源来研究微杆的微波特性。 然后，Microbridge将作为混合器操作。 将测量转换效率和混合噪声。