Studies of atmospheric pressure plasmas

大气压等离子体的研究

• 批准号: 2279772
• 金额: --
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2279772
• 关键词: Studies; atmospheric; pressure; plasmas

Atmospheric pressure plasmas are currently of great interest due to their potential applications in industry and medicine, including wound healing and cancer therapies as well as agricultural applications. A great deal of work has been carried out on so called 'plasma jets'. These are plasmas created by applying strong AC electric fields to a stream of He gas that comes out of the end of glass nozzle. This can result in the generation of 'bullets' of plasma that travel at 10s km per second. Such streams of plasma bullets have been used to study damage in DNA with a view to their use in medical applications. It is also proposed that they can be more effective in neutralizing so called 'superbugs' than chemical cleaning methods.The study of the temperature, electron density and ionised species of such plasma bullets is difficult but essential if we are to understand their nature and interactions with surfaces such as biological specimens. In this project a range of techniques such as optical emission spectroscopy, Raman spectroscopy and Thomson scattering will be applied along with ultra-fast optical imaging to gather a complete data set on our plasmas.

大气压等离子体由于其在工业和医学（包括伤口愈合和癌症治疗以及农业应用）中的潜在应用而目前引起极大兴趣。大量的工作已经进行了所谓的“等离子体射流”。这些是通过将强交流电场施加到从玻璃喷嘴端部出来的He气体流而产生的等离子体。这可能导致产生每秒10公里的等离子体“子弹”。这种等离子体子弹流已被用于研究DNA中的损伤，以期将其用于医学应用。还提出它们可以比化学清洁方法更有效地中和所谓的“超级细菌”。如果我们要了解它们的性质以及与生物标本等表面的相互作用，对这种等离子体子弹的温度，电子密度和电离物质的研究是困难的，但却是必不可少的。在这个项目中，一系列的技术，如光学发射光谱，拉曼光谱和汤姆逊散射将被应用沿着超快光学成像，以收集我们的等离子体的完整数据集。

项目成果

Optical diagnosis of a kHz-driven helium atmospheric pressure plasma jet

• DOI: 10.1017/s0022377822000538
• 发表时间: 2022-06
• 期刊: Journal of Plasma Physics
• 影响因子: 2.5
• 作者: C. McDonnell;R. Irwin;S. White;W. Graham;D. Riley