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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >The interaction of an atmospheric pressure plasma jet with liquid water: dimple dynamics and its impact on crystal violet decomposition
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The interaction of an atmospheric pressure plasma jet with liquid water: dimple dynamics and its impact on crystal violet decomposition

机译:大气压等离子体喷射与液态水的相互作用:凹坑动力学及其对水晶紫分解的影响

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摘要

The interaction of atmospheric pressure plasmas with a liquid can result in the deformation of the gas-liquid interface. In this paper, we report on the gas-liquid interfacial dynamics during the impingement of an argon radio frequency driven atmospheric pressure plasma jet (APPJ). The dynamics of the dimples generated during the impingement of the APPJ on the liquid depends on the plasma power, gas flow rate, size of the liquid container and the distance of the APPJ nozzle to the liquid surface. When the plasma is in contact with the liquid, the dimple oscillation frequency correlates with the dynamics of the plasma filament. At larger jet-liquid distances, the APPJ behaves similar to a gas jet although in most cases with an enhanced deformation of the liquid interface or change in dimple dynamics. The observed dimple oscillations can significantly enhance the decomposition efficiency of crystal violet by enhancing liquid phase convection. The conditions studied in this paper are similar to typical conditions for in vitro plasma-bio-interaction studies and the plasma-induced interfacial liquid dynamics, which is often not considered in many studies, might enhance plasma-induced liquid phase chemistry and reactivity.
机译:大气压等离子体与液体的相互作用会导致气液界面的变形。本文研究了氩射频驱动大气压等离子体射流(APPJ)撞击过程中的气液界面动力学。APPJ撞击液体时产生的凹陷的动力学取决于等离子体功率、气体流速、液体容器的尺寸以及APPJ喷嘴到液体表面的距离。当等离子体与液体接触时,韧窝振荡频率与等离子体灯丝的动力学相关。在较大的射流-液体距离下,APPJ的行为类似于气体射流,尽管在大多数情况下,液体界面的变形增强或酒窝动力学发生变化。观察到的酒窝振荡可以通过增强液相对流显著提高结晶紫的分解效率。本文研究的条件类似于体外等离子体生物相互作用研究的典型条件,而许多研究中通常未考虑的等离子体诱导的界面液体动力学可能会增强等离子体诱导的液相化学和反应性。

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