EAGER: Acoustic Wave Driven Parametric Electrical Resonators

EAGER：声波驱动参数电谐振器

• 批准号: 1829821
• 负责人: Levent Degertekin
• 金额: $ 8万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-06-01 至 2019-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1829821&HistoricalAwards=false
• 关键词: EAGER; Acoustic; Wave; Driven; Parametric; EAGER; Acoustic; Wave; Driven; Parametric

Ultrasound is routinely used for safely imaging unborn babies deep in the body and diagnosing a variety of illnesses from liver to heart diseases. This opens the possibility that it can also be used to power medical implants such as cardiac pacemakers and neural stimulators. Capacitive devices, like microphones, are widely used for sound to electrical signal conversion but they are deemed unsuitable for implants as they require batteries to charge them. In this research, parametric effect, like a child pumping a swing by periodically standing and squatting to increase the size of the swing's oscillations, is investigated to remove this limitation. It turns out that one move a plate of a capacitor using sound waves or mechanical input over a certain threshold level to start this type of oscillation in an electrical circuit without a need for a battery. Initial analysis shows that this energy conversion can be very efficient, leading to remotely powering medical devices with ultrasound, and this oscillation can be started potentially with very small input levels, leading to very sensitive mechanical sensors to be used for energy harvesting, seismic or underwater sensing. In this project, these possibilities and fundamental limits of this unique approach will be explored experimentally and through detailed models.The objective of this research is to test a radically different approach to acoustic power transfer and sensing through the use of electrical parametric oscillators (resonators) driven by acoustic waves. In addition to optimized power transfer efficiency, the parametric amplification and noise squeezing for acoustic sensing applications will be explored by analyzing the fundamental mathematical problem of coupled oscillator based parametric systems and parametric super-resonance. Both analytical and numerical analysis methods will be utilized. This project will generate the proof of concept data for demonstration of efficient power transfer and model verification to develop new type of devices through ultrasound experiments in 500kHz-2MHz range. Use of inductance and resistance modulation for parametric resonance will be explored. If successful, this project, by exploiting nonlinearity and resonance, can lead to a paradigm shift in acoustic transduction which heretofore depended predominantly on linear, passive properties of capacitive and piezoelectric devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

超声通常用于安全地对体内深处的未出生婴儿进行安全化，并诊断从肝脏到心脏病的各种疾病。这打开了它也可以用于为心脏起搏器和神经刺激剂等医疗植入物提供动力的可能性。电容式设备（如麦克风）被广泛用于声音转换，但它们被认为不适合植入物，因为它们需要电池为电池充电。在这项研究中，研究了参数效应，就像一个儿童通过定期站立和蹲下以增加摇摆振荡的大小，以消除此限制。事实证明，一个人使用声波或机械输入在一定阈值水平上移动一盘电容器，以在电路中启动这种类型的振荡，而无需电池。最初的分析表明，这种能量转换可能非常有效，从而导致具有超声波的远程为医疗设备提供动力，并且该振荡可以从非常小的输入水平开始，从而导致非常敏感的机械传感器用于能量收集，地震或水下传感。在这个项目中，将通过实验和详细的模型探索这种独特方法的这些可能性和基本限制。这项研究的目的是通过使用由声波驱动的电气参数振荡器（谐振器）来测试一种截然不同的声性传递和传感方法。除了优化的功率传递效率外，还将通过分析基于耦合振荡器的参数系统和参数超差异的基本数学问题来探索用于声感应应用的参数放大和噪声挤压。分析和数值分析方法将被使用。该项目将生成概念数据证明，以证明有效的功率传输和模型验证，以通过500KHz-2MHz范围内的超声实验开发新​​型设备。将探讨使用电感和电阻调制对参数共振的使用。如果成功的话，该项目通过利用非线性和共振，可能导致声学转导的范式转移，迄今为止，该项目主要依赖于电容性和压电设备的线性，被动性能。该奖项反映了NSF的法定任务，并反映了通过评估范围的支持者，并通过评估了范围的范围。