MRI-R2: Development of Instrumentation for Nanoscale Spatial and Time Resolved Microwave Studies at Variable Temperatures and Magnetic Fields

0960120 Chandrasekhar西北大学技术概述：该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。这个项目是为了开发一个设施，使西北大学在凝聚态物质和材料物理方面的各种实验能够进行低温、时间、频率和空间分辨率的射频和微波测量。在项目期间，将尝试四组实验：研究介观设备中的互相关噪声；纳米级铁磁体的磁化动力学；半导体设备中的Luttinger液体的飞行时间测量；以及正常金属中的持续电流。然而，这个新设施的用处将远远超出这些最初的实验，涉及西北大学的其他小组，并使西北大学的研究小组能够积极地将高频技术纳入他们未来的实验研究计划中。它还将允许西北大学的本科生、研究生和博士后熟悉无线电和微波频率技术，这项技能在学术界和行业中正变得越来越重要。非技术摘要：该奖项由2009年美国复苏和再投资法案(公共法律111-5)资助。电子电路的日益小型化使快速计算机和轻薄手机的开发成为可能，同时也伴随着让这些设备工作得更小、更快的愿望。将设备元件的尺寸缩小到纳米级--十亿分之一米的大小--给试图在纳秒或更短的时间尺度上研究它们的行为带来了新的实验挑战，这些时间尺度对尖端电子设备越来越重要。该项目致力于开发仪器，以研究频率从几千兆赫开始的纳米材料的行为，这是目前最快的台式计算机运行的频率，到几十千兆赫。除了提供制造下一代纳米级高频设备的更好方法的见解外，将开发的仪器还将使以高频探索基本量子现象的实验成为可能，并在此过程中培训下一代科学家和工程师掌握这些基本技术。

0960120ChandrasekharNorthwestern U.Technical Summary: This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This project is for the development of a facility to enable low-temperature, time-, frequency- and spatially-resolved radiofrequency and microwave measurements for a wide variety of experiments in condensed matter and materials physics at Northwestern University. Four sets of experiments will be attempted during the project period: investigation of cross-correlation noise in mesoscopic devices; magnetization dynamics of nanoscale ferromagnets; time-of-flight measurements in Luttinger liquids in semiconductor devices; and persistent currents in normal metals. However, the usefulness of this new facility will extend far beyond these initial experiments, involving other groups at Northwestern, and enabling research groups at Northwestern to actively incorporate high-frequency techniques in their future experimental research plans. It will also allow undergraduate and graduate students and post-docs at Northwestern to gain familiarity with radio and microwave frequency techniques, a skill that is becoming increasing important in both academia and industry.Non-Technical Abstract:This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The increasing miniaturization of electronic circuitry that allows the development of fast computers and slim cell phones is also accompanied by a desire to make these devices work even smaller and faster. Reducing the size of device elements to the scale of nanometers--one billionth the size of a meter--presents new experimental challenges in trying to study their behavior at time scales of a nanosecond or shorter, time scales that are increasingly important for cutting-edge electronic devices. This project is devoted to developing instrumentation to study the behavior of nanoscale materials at frequencies starting at a few gigahertz, the frequencies at which the current fastest desktop computers operate, to a few tens of gigahertz. In addition to providing insight into better ways to make the next generation of nanoscale, high-frequency devices, the instrumentation that will be developed will enable experiments exploring fundamental quantum phenomena at high frequency, and in the process train the next generation of scientists and engineers in these essential techniques.