ECLIPSE: CAS-Climate: Understanding the Role of Thermally-Driven Processes in Pattern Formation and Droplet Emission in DC Glows with Applications to Water Treatment

该奖项使研究等离子体-液体相互作用，可用于在大气压下等离子体处理水。 大气压等离子体是在常规空气中产生的等离子体，其应用范围从水处理到CO2减排到医学。 对于水处理和医疗应用，重要的是要了解这些等离子体如何与水相互作用。这种相互作用产生了高度反应性的物质，可以将电能转化为化学能，以推动饮用水中有毒化学物质的分解或污染表面上细菌和病毒颗粒的消毒。这项研究活动旨在了解等离子体-液体相互作用，并研究与自组织等过程相关的等离子体接触区域的物理学。 这项研究预计将提供洞察力的应用，如水处理，通过控制的等离子体液体接触面积和活性物质通过自组织交付的规模。 因此，该项目得到了ECosystem for Leading Innovation in Plasma Science and Engineering（ECLIPSE）计划的支持，该项目将研究一个大气压直流辉光，以液体阳极作为测试平台，以了解复杂的等离子体-液体界面，并展示对接触面积的理解和控制。 这种放电是令人感兴趣的，因为阳极附着可以自组织，从而改变接触区域的空间分布和尺寸-等离子体和液体之间的关键能量和质量传递通道。 将探讨在放电操作中起关键作用的蒸发等热过程的作用。这种放电也是溶剂化电子和液体衍生的高速液滴的来源，其中一些包含纳米颗粒。 使用先进的光学诊断，我们的目标是了解与自组织相关的约束动力学变量和放电维护中的热传输的重要性。 该奖项反映了NSF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。

This award enables study of plasma-liquid interactions which could be exploited for plasma treatment of water at atmospheric pressure. Applications of atmospheric pressure plasmas, which are plasmas produced in regular air, range from water treatment to CO2 abatement to medicine. For water treatment and medical applications, it is important to understand how these plasmas interact with water. Such interactions create highly reactive species that can transform electrical energy into chemical energy to drive the decomposition of toxic chemicals in drinking water or the disinfection of bacteria and viral particles on contaminated surfaces. This research activity aims to understand the plasma-liquid interaction and investigate the physics of the plasma contact area associated with processes such as self-organization. This research is expected to provide insight for scale-up for applications such as water treatment through the control of the plasma liquid contact area and reactive species delivery through self-organization. As such, this project is being supported under the ECosystem for Leading Innovation in Plasma Science and Engineering (ECLIPSE) program.The project will investigate the one atmosphere DC glow with liquid anode as a test bed to understand the complex plasma-liquid interface and demonstrate understanding and control over the contact area. This discharge is of interest because the anode attachment can self-organize, thereby changing the spatial distribution and size of the contact area - a key energy and mass transfer channel between plasma and liquid. The role of thermal processes such as evaporation that appear to play a key role in discharge operation will be explored. This discharge is also a source of solvated electrons and liquid derived high-speed droplets, some of which contain nanoparticles. Using advanced optical diagnostics, the goal is to understand the constrained dynamical variables associated with self-organization and the importance of thermal transport in discharge maintenance. This, in turn, will lead to improved understanding of the physics and chemistry of the plasma-liquid interface.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.