Intrinsically-Nonlinear Broadband Nanoresonator for Ultrahighly Sensitive Sensing of Energy Transfers

用于能量传输超高灵敏传感的本质非线性宽带纳米谐振器

• 批准号: 1000615
• 负责人: Min-Feng Yu
• 金额: $ 40万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1000615&HistoricalAwards=false
• 关键词: Intrinsically; Nonlinear; Broadband; Nanoresonator; Ultrahighly

This research project aims to advance a new concept in micro-/nano-resonator development that involves the substitution of a geometric nonlinearity in an otherwise linear resonant system to realize an intrinsically nonlinear broadband resonator. Such a resonator has no preferential resonant frequency and is nonlinear at any oscillation amplitude and across the whole frequency spectrum. The reduced size, down to micro-/nano-scale, significantly reduces the overall system energy; this in turn makes the system sensitive to even the slightest amount of energy transfer. Advanced tools and nanomaterials will be used to fabricate the nonlinear nanoresonator, and an integrated experimental and theoretical approach will be implemented to study the nonlinear dynamics and system instability. Particular focus will be placed onto the characterization and analysis of the sensitivity of this nonlinear nanoresonator to energy transfers in hope to translate this new concept into development of ultrahigh sensitivity nano-sensors that can be operated in practical environments.This research thus broadens the current research on nanoscale mechanical resonance, which is mostly in the linear dynamics regime, to the strongly nonlinear dynamics regime. Therefore, the research will not only provide new fundamental understanding of a scientifically highly interesting topic, but also lead to the development of a new class of nano-devices for sensing applications. The educational projects included will further broaden the impact of this project by providing appealing materials for the education of students and the public and by offering hands-on training opportunities for students, especially minority undergraduate and graduate students.

该研究项目旨在推进微/纳米谐振器开发的新概念，涉及在线性谐振系统中替代几何非线性，以实现本质上非线性的宽带谐振器。 这种谐振器没有优先谐振频率，并且在任何振荡幅度和整个频谱上都是非线性的。 尺寸缩小至微米/纳米尺度，显着降低了整体系统能耗；这反过来又使得系统对哪怕是最少量的能量转移都很敏感。 将使用先进的工具和纳米材料来制造非线性纳米谐振器，并将采用综合实验和理论方法来研究非线性动力学和系统不稳定性。 我们将特别关注这种非线性纳米谐振器对能量转移的敏感性的表征和分析，希望将这一新概念转化为可在实际环境中运行的超高灵敏度纳米传感器的开发。因此，这项研究将目前主要在线性动力学领域的纳米级机械谐振研究拓宽到强非线性动力学领域。 因此，这项研究不仅将为科学上非常有趣的主题提供新的基本理解，而且还将导致用于传感应用的新型纳米器件的开发。 所包含的教育项目将通过为学生和公众的教育提供有吸引力的材料，并为学生，特别是少数民族本科生和研究生提供实践培训机会，进一步扩大该项目的影响。