ECLIPSE/Collaborative Proposal: Studying Microwave-Plasma Interactions at Solid Interfaces Using Microwave Microstrip Architectures

ECLIPSE/协作提案：使用微波微带架构研究固体界面处的微波-等离子体相互作用

• 批准号: 2206546
• 负责人: Steven Ray
• 金额: $ 27.5万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2206546&HistoricalAwards=false
• 关键词: ECLIPSE; Collaborative; Proposal; Studying; Microwave

This project explores the effect of microwave radiation on low temperature plasmas composed of electrons, ions, and neutral particles. Low temperature plasmas are routinely used in fields from manufacturing to medicine to clean energy technology, and it is desirable to be able to modify a plasma in real-time based on the requirements of the application at hand. A promising method of changing plasma conditions is through the use of microwave energy. Microwave fields are often used in plasma science for diagnostic measurement and as a means of creating and sustaining plasmas. However, relatively little is known as to how microwaves can be used to augment and modify plasmas created by other means. In this project, the effect of highly-focused microwave radiation will be studied in order to develop an improved understanding of microwave coupling into plasmas with the goal of providing a means of predictably changing plasma conditions. This work is supported through the ECosystem for Leading Innovation in Plasma Science and Engineering (ECLIPSE) program as a collaboration between the State University of New York at Buffalo and Texas Tech University.This project will design and develop a set of microwave stripline and microstrip structures aimed at different microwave frequencies and adapted specifically to the plasma conditions found within different plasma types. The interaction of focused microwave fields with laser induced plasmas and reduced-pressure glow discharges in the proximity of solid interfaces will be studied by real-time electrical impedance and vector network measurements, optical emission spectrometry, tunable diode laser absorption spectroscopy, and Thomson scattering measurements. These measurements will be used to calculate fundamental parameters, such as electron number density and temperature, Boltzmann equilibria excitation temperatures, ionization temperatures, rotational temperatures, and vibrational temperatures. A major focus of the project will be to determine how interactions with microwaves alter these fundamental plasma parameters, and thereby to understand how microwaves perturb the different energy pathways in the plasma. The outcomes of the proposed work will include an improved understanding of microwave coupling in plasmas. This can be exploited in order to create improved means of optimizing microwave/plasma interactions that will lead to the development of new energy efficient systems and technologies.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.

本项目探讨微波辐射对由电子、离子和中性粒子组成的低温等离子体的影响。低温等离子体通常用于从制造到医疗到清洁能源技术等领域，并且能够根据手头应用的要求实时修改等离子体是可取的。一种很有前途的改变等离子体条件的方法是利用微波能量。在等离子体科学中，微波场常用于诊断测量和作为产生和维持等离子体的手段。然而，对于如何利用微波来增强和修改通过其他方式产生的等离子体，人们所知相对较少。在这个项目中，将研究高度聚焦的微波辐射的影响，以便更好地理解微波与等离子体的耦合，目的是提供一种可预测的等离子体条件变化的方法。这项工作得到了等离子体科学与工程领先创新生态系统（ECLIPSE）项目的支持，该项目是纽约州立大学布法罗分校和德克萨斯理工大学合作开展的。本项目将设计和开发一套微波带状线和微带结构，针对不同的微波频率，并专门适应不同等离子体类型的等离子体条件。聚焦微波场与激光诱导等离子体和固体界面附近的减压辉光放电的相互作用将通过实时电阻抗和矢量网络测量、光学发射光谱、可调谐二极管激光吸收光谱和汤姆逊散射测量来研究。这些测量将用于计算基本参数，如电子数密度和温度，玻尔兹曼平衡激发温度，电离温度，旋转温度和振动温度。该项目的一个主要焦点将是确定与微波的相互作用如何改变这些基本等离子体参数，从而了解微波如何干扰等离子体中的不同能量途径。提出的工作结果将包括对等离子体微波耦合的更好理解。这可以被用来创造优化微波/等离子体相互作用的改进方法，从而导致新的节能系统和技术的发展。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。