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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Etching of polymers, proteins and bacterial spores by atmospheric pressure DBD plasma in air
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Etching of polymers, proteins and bacterial spores by atmospheric pressure DBD plasma in air

机译：在空气中通过大气压DBD等离子体蚀刻聚合物，蛋白质和细菌孢子

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Many studies proved that non-equilibrium discharges generated at atmospheric pressure are highly effective for the bio-decontamination of surfaces of various materials. One of the key processes that leads to a desired result is plasma etching and thus the evaluation of etching rates of organic materials is of high importance. However, the comparison of reported results is rather difficult if impossible as different authors use diverse sources of atmospheric plasma that are operated at significantly different operational parameters. Therefore, we report here on the systematic study of the etching of nine different common polymers that mimic the different structures of more complicated biological systems, bovine serum albumin (BSA) selected as the model protein and spores of Bacillus subtilis taken as a representative of highly resistant micro-organisms. The treatment of these materials was performed by means of atmospheric pressure dielectric barrier discharge (DBD) sustained in open air at constant conditions. All tested polymers, BSA and spores, were readily etched by DBD plasma. However, the measured etching rates were found to be dependent on the chemical structure of treated materials, namely on the presence of oxygen in the structure of polymers.
机译：许多研究证明，在大气压下产生的非平衡排放对各种材料表面的生物净化非常有效。导致所需结果的关键过程之一是等离子体蚀刻，因此对有机材料的蚀刻速率的评估具有很高的重要性。然而，如果不同的作者使用在显着不同的操作参数下操作的多样化源，则报告的结果的比较是相当困难的。因此，我们在这里报告了九种不同普通聚合物的蚀刻的系统研究，模仿更复杂的生物系统的不同结构，牛血清白蛋白（BSA）作为模型蛋白和枯草芽孢杆菌的模型蛋白和孢子作为高度高度的代表抗性微生物。通过在恒定条件下在露天透露空气中持续的大气压介电阻挡放电（DBD）进行这些材料的处理。所有测试的聚合物，BSA和孢子都被DBD血浆易于蚀刻。然而，发现测量的蚀刻速率取决于处理物的化学结构，即在聚合物结构中存在氧气。

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