一种低功耗柔性介质阻挡放电可对表面进行消毒并增强过氧化氢的作用
A low power flexible dielectric barrier discharge disinfects surfaces and improves the action of hydrogen peroxide
AI总结：
本文提出将柔性DBD等离子体源与3%过氧化氢协同用于表面消毒，在90秒内实现>6log10细菌载量降低，效果显著优于两种单独处理。
摘要：
目前迫切需要可供公众使用的消毒和灭菌设备，而利用冷大气压等离子体的创新策略可以满足这一需求。在此，我们探索并评估了一种将介质阻挡放电（DBD）柔性印刷电路设计与环境安全化学试剂相结合的方法，用于去除表面的细菌污染物。该设备在环境空气中运行，无需任何额外气流，功率密度约为0.5 W/cm^2。使用3%过氧化氢溶液作为模型试剂，我们证明在90秒内表面污染物的细菌载量减少量提升至>6log10；在相同处理时间下，相比单独使用过氧化氢和单独使用柔性DBD，分别快约3log10和2log10。等离子体的生物活性特性与过氧化氢的协同作用使表面消毒效果显著提升。这为将低功耗柔性DBD等离子体源用于表面消毒和去污开辟了新的可能性。
英文摘要：
There is an urgent need for disinfection and sterilization devices accessible to the public that can be fulfilled by innovative strategies for using cold atmospheric pressure plasmas. Here we explore and evaluate an approach combining a flexible printed circuit design of a dielectric barrier discharge (DBD) with an environmentally safe chemical reagent for surface decontamination from bacterial contaminants. The device operates in ambient air without any additional gas flow at a power density of about 0.5 W/cm^2. Using a 3% hydrogen peroxide solution as a model reagent we demonstrate improved reduction in the bacterial load of a surface contaminant of >6log10 in 90 seconds, about 3log10 and 2log10 faster compared to hydrogen peroxide alone and the flexible DBD alone, respectively, for the same treatment time. The synergistic action of the plasma bioactive properties and hydrogen peroxide result in a dramatic improvement of surface disinfection. This opens new possibilities for using the low power flexible DBD plasma sources for surface disinfection and decontamination.
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