CAREER: Exploiting Collective Behaviors in Coupled Micro- and Nanosystems

职业：利用耦合微纳米系统中的集体行为

• 批准号: 0846385
• 负责人: Jeffrey Rhoads
• 金额: $ 42.49万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-15 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846385&HistoricalAwards=false
• 关键词: CAREER; Exploiting; Collective; Behaviors; Coupled

Project Abstract: CAREER: Exploiting Collective Behaviors in Coupled Micro- and NanosystemsThough micro/nanomechanical resonators have been shown to offer distinct potential in applications ranging from resonant mass sensing to probe-based microscopy, their broad implementation is currently impeded by the comparatively-low throughput associated with isolated resonator implementations. While uncoupled resonator arrays have been proposed to overcome this throughput constraint, the signal processing and hardware requirements attendant to this approach largely negate its utility. An alternative, and in many ways more attractive, approach, is to realize improved throughput through the active exploitation of collective behaviors arising in coupled micro/nanoresonator arrays. This approach has the added benefit of potentially yielding improved performance metrics and/or inherent signal processing (e.g. input/output order reduction).The proposed project, incorporating analytical, experimental, and educational outreach activities, seeks to investigate collective behaviors that arise in micro/nanoresonator arrays, which are locally- or globally-coupled through elastic, electrostatic, or electromagnetic mechanisms, in order to significantly improve their performance in emerging applications such as resonant mass sensing, electromechanical signal processing, and micromechanical neurocomputing. The research effort will initially focus on the development of multi-physics, distributed-parameter models of representative micro/nanoresonator arrays. These models, incorporating nonlinearities and asymmetries amongst other pertinent effects, will be systematically discretized and analyzed using standard perturbation methods. Using the results of these analyses, localized and synchronous behaviors will be identified, predictive design tools will be developed, and promising array designs distilled. Coupled microresonator arrays based on these designs will be subsequently fabricated and tested, using the fabrication and characterization suites available to the PI at Purdue University's Birck Nanotechnology Center, to verify predicted dynamic behaviors. Ultimately, the work will develop a refined understanding of the collective and emergent behaviors associated with coupled micro/nanoresonators and, with this understanding in hand, will actively exploit these behaviors to circumvent the aforementioned throughput constraint, improve overall device performance, and spur the development of novel MEMS/NEMS devices based upon coupled array architectures.To ensure broad impact, the proposed research effort will be hierarchically integrated with an educational effort that is founded upon the existing cyber-infrastructure of the nanoHUB - the web portal of the National Science Foundation's Network for Computational Nanotechnology, as well as Purdue University's Summer Undergraduate Research Fellowship (SURF) program. The PI will develop and deploy on the nanoHUB (i) a comprehensive software tool for the simulation of collective behaviors emergent in coupled micro/nanoresonator arrays; (ii) a new K-12 module on emergent micro/nanoelectromechanical systems (MEMS and NEMS), which emphasizes the engineer's role in micro/nanotechnology; and (iii) course materials and lectures associated with a new course on the Mechanics of Micro- and Nanosystems. These materials will be assessed using the nanoHub's existing qualitative and quantitative evaluation tools, as well as module-specific evaluation mechanism (e.g. interactive self-tests integrated within the K-12 module). As a whole, the PI anticipates that hundreds of scientists and students worldwide will utilize these resources to further their understanding of micro/nanosystems at either an introductory or research level. The educational effort will also incorporate a number of undergraduate research experiences arranged through Purdue University?s SURF program. These summer-long, intensive experiences will specifically target under-represented students.

项目摘要：职业：利用耦合微纳米系统中的集体行为尽管微/纳米机械谐振器已被证明在从谐振质量传感到基于探针的显微镜等应用中具有独特的潜力，但其广泛实施目前受到与隔离谐振器实现相关的相对较低的吞吐量的阻碍。虽然已经提出了非耦合谐振器阵列来克服这种吞吐量限制，但这种方法所伴随的信号处理和硬件要求在很大程度上否定了它的实用性。 另一种在许多方面更具吸引力的方法是通过积极利用耦合微/纳米谐振器阵列中出现的集体行为来提高吞吐量。 这种方法的另一个好处是可能产生改进的性能指标和/或固有信号处理（例如输入/输出阶数降低）。拟议的项目结合了分析、实验和教育推广活动，旨在研究微/纳米谐振器阵列中出现的集体行为，这些阵列通过弹性、静电或电磁机制进行局部或全局耦合，以便显着改善 它们在共振质量传感、机电信号处理和微机械神经计算等新兴应用中的性能。 研究工作最初将集中于开发代表性微/纳米谐振器阵列的多物理、分布式参数模型。 这些模型结合了非线性和不对称性以及其他相关效应，将使用标准扰动方法进行系统地离散化和分析。利用这些分析的结果，将识别局部和同步行为，开发预测设计工具，并提炼出有前途的阵列设计。随后将使用普渡大学 Birck 纳米技术中心 PI 可用的制造和表征套件来制造和测试基于这些设计的耦合微谐振器阵列，以验证预测的动态行为。 最终，这项工作将深入了解与耦合微/纳米谐振器相关的集体和突发行为，并根据这种理解，积极利用这些行为来规避上述吞吐量限制，提高整体器件性能，并促进基于耦合阵列架构的新型 MEMS/NEMS 器件的开发。为了确保广泛的影响，拟议的研究工作将分层集成 其教育工作建立在 nanoHUB 现有网络基础设施的基础上，nanoHUB 是美国国家科学基金会计算纳米技术网络的门户网站，以及普渡大学的夏季本科生研究奖学金 (SURF) 计划。 PI 将在 nanoHUB 上开发和部署 (i) 一个综合软件工具，用于模拟耦合微/纳米谐振器阵列中出现的集体行为； (ii) 关于新兴微/纳米机电系统（MEMS 和 NEMS）的新 K-12 模块，强调工程师在微/纳米技术中的作用； (iii) 与微纳米系统力学新课程相关的课程材料和讲座。 这些材料将使用 nanoHub 现有的定性和定量评估工具以及特定于模块的评估机制（例如，K-12 模块中集成的交互式自测试）进行评估。总体而言，PI 预计全球数百名科学家和学生将利用这些资源在入门或研究层面进一步加深对微/纳米系统的理解。 教育工作还将纳入通过普渡大学 SURF 项目安排的一些本科生研究经验。 这些为期夏季的密集体验将专门针对代表性不足的学生。