NIRT: Active Nanostructures with Giant Piezo-response

NIRT：具有巨大压电响应的活性纳米结构

• 批准号: 0708759
• 负责人: Chang-Beom Eom
• 金额: $ 135万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0708759&HistoricalAwards=false
• 关键词: NIRT; Active; Nanostructures; Giant; Piezo

0708759Chang-Beom EomUniversity of Wisconsin-MadisonActive Nanostructures with Giant Piezo-responseIntellectual Merit: Major challenges are emerging as electromechanical systems move to the nano-scale (nanoelectromechanical systems, or NEMS), with an integration density that demands faster and larger relative motion range. Our recently developed giant piezoelectric epitaxial thin-films directly on silicon can drastically increase the motion range and speed, with even potentially greater response by using engineered nanoscale strain distributions and domain structures. We will integrate epitaxial thin film heterostructures of giant piezoelectric materials directly on silicon to make hyper-active nano-electromechanical systems. These heterostructures are compatible with silicon nanofabrication processes, can be integrated with silicon-based electronics, and have large enough response to revolutionize active NEMS actuators. This research will develop a fundamental scientific understanding of nanoscale piezoelectric phenomena in active nanoscale electromechanical devices, with applications in high performance signal processing, communications, sensors, and nano-positioning actuators. The relationship between piezo-response and nanoscale strain and domain configurations developed here can be applied to multifunctional materials to develop new NEMS devices. Broader Impacts: This research will resolve the fundamental issues that control nanoscale performance of piezoelectric materials in NEMS devices. Future generations of NEMS devices enabled by this research are likely to find wide-ranging applications and bring technological advances to many parts of society. Our Education goal is a broad experience for all students. This includes first-year student rotation through research groups, working in international and industrial laboratories, research interactions with individuals of diverse backgrounds, and participating in outreach programs. In Outreach, secondary school science teachers from Mayaguez, Puerto Rico will be brought to UW-Madison each summer for a nanotechnology learning/research experience. They will develop classroom material in both English and Spanish, and put in place programs for implementation secondary schools across the country. Graduate students will be involved as mentors to the teachers.

0708759 chang-beom emuniversity具有巨大的压电 - 反应素的功绩：随着机电系统的转移到纳米尺度（纳米机械系统，或NEMS），具有相对的动作范围和较大的相对运动范围，主要挑战正在出现。我们最近在硅上直接开发的巨型压电外延薄膜可以大大提高运动范围和速度，通过使用工程的纳米级应变分布和域结构，甚至可能会更大的响应。我们将直接在硅上整合巨型压电材料的外延薄膜异质结构，以制造超活动的纳米电机力学系统。这些异质结构与硅纳米化过程兼容，可以与基于硅的电子设备集成，并且对革新活跃的NEM执行器具有足够的反应。这项研究将在活跃的纳米级机电设备中对纳米级压电现象有基本的科学理解，并在高性能信号处理，通信，传感器和纳米置换执行器中应用。在这里开发的压电反应与纳米级应变与域配置之间的关系可以应用于多功能材料以开发新的NEMS设备。更广泛的影响：这项研究将解决控制NEMS设备中压电材料的纳米级性能的基本问题。这项研究实现的NEMS设备的后代可能会找到广泛的应用程序，并为社会许多地区带来技术进步。我们的教育目标是所有学生的广泛经验。这包括通过研究小组进行的一年级学生轮换，在国际和工业实验室工作，与不同背景的个人进行研究互动以及参加外展计划。在宣传中，来自玛雅格斯的中学科学老师，波多黎各每年夏天将带到西澳大学 - 麦迪逊森林，以获得纳米技术学习/研究经验。他们将以英语和西班牙语开发课堂材料，并制定全国实施中学的计划。研究生将成为老师的导师。