The 2022 Roadmap is the next update in the series of Plasma Roadmaps published by Journal of Physics D with the intent to identify important outstanding challenges in the field of low-temperature plasma (LTP) physics and technology. The format of the Roadmap is the same as the previous Roadmaps representing the visions of 41 leading experts representing 21 countries and five continents in the various sub-fields of LTP science and technology. In recognition of the evolution in the field, several new topics have been introduced or given more prominence. These new topics and emphasis highlight increased interests in plasma-enabled additive manufacturing, soft materials, electrification of chemical conversions, plasma propulsion, extreme plasma regimes, plasmas in hypersonics, data-driven plasma science and technology and the contribution of LTP to combat COVID-19. In the last few decades, LTP science and technology has made a tremendously positive impact on our society. It is our hope that this roadmap will help continue this excellent track record over the next 5–10 years.
Front Cover: An atmospheric pressure diffuse dielectric barrier discharge between cylindrical rotary electrodes was applied for deposition of silica‐like moisture barrier films on polymer foil. The discharge was operated in N2/O2/Ar gas mixture with the addition of tetraethyl orthosilicate. It is shown that high quality permeation barrier films can be deposited by atmospheric pressure roll‐to‐roll process. Further details can be found in the article by Sergey A. Starostin et. al. http://doi.wiley.com/10.1002/ppap.201400194.
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