GOALI: ELASTIC WAVE RESONATORS

摘要：当前用于计量的技术受到测量速度慢、对表面相互作用敏感的困扰，有些技术甚至会由于表面上的尖端磨损而使被测表面变形。开发新工具来应对这些挑战可能会催生纳米计量学和结构纳米组装领域的新时代。此类系统在电子、光学和生物应用领域具有重要意义。这项综合研究和教育的 GOALI 提案围绕弹性波谐振器的开发以及 Ag2Ga 纳米针和光机械致动器的集成，以实现纳米操纵、纳米计量和纳米组装的精确工具。弹性波谐振器的原理是单维和多维驻波以kHz至MHz的速率沿高纵横比微尺度灯丝传播的方法。与灯丝的柔性和刚度相比，“波包”内包含的能量大小使得能够沿着灯丝产生和维持明显的驻波。该提案的目标是研究纳米级驻波探针谐振器在计量学中的使用，了解此类谐振器的机电限制和缩放问题，开发数学模型并开发纳米组装中的应用。该提案的教育方面是利用基于研究的纳米机械谐振器本科课程、工业现场实习、纳米机械谐振器研究生课程以及为这一令人兴奋的领域中代表性不足的学生提供的机会。

Abstract: Current techniques used for metrology are plagued by slow measurement speed, susceptibility to surface interactions, and some techniques can even deform the measured surface due to tip wear on the surface. Development of new tools to address these challenges could spawn a new era in the area of nano-metrology, and nano-assembly of structures. Such systems can have significance in the area of electronics, optical, and biological applications. This integrated research and education GOALI proposal centers around the development of elastic wave resonators and integration of Ag2Ga nano-needles and photomechanical actuators to enable precise tools for nanomanipulation, nano-metrology and nano-assembly. The principle of elastic wave resonators is a method by which single and multidimensional standing waves propagate at a rate of kHz to MHz along a high aspect ratio micro-scale filament. The magnitude of energy contained within the "wave packet" compared to the flexibility and stiffness of the filament enable pronounced standing waves to be generated and sustained along the filament. The proposal objectives are to investigate the use of nanoscale standing wave probe resonators for metrology, understand the electro-mechanical limits and scaling issues of such resonators, develop mathematical models and develop applications in nano-assembly. The educational aspects of the proposal are utilizing research based undergraduate course in nano-mechanical resonators, internships at industrial sites, graduate level course on nano-mechanical resonators, and opportunities for underrepresented students in this exciting area.