种子的冷等离子体处理：通过多次曝光，随机化和搅拌来破译接触表面的作用
Cold plasma treatment of seeds: deciphering the role of contact surfaces through multiple exposures, randomizing and stirring
摘要：
冷等离子体技术是改善种子发芽特性的有效方法，特别是在电介质阻挡装置内的堆叠配置中。在这样的干燥大气等离子体引发过程中，我们表明20分钟的He-N2等离子体处理可以将小扁豆种子的中值发芽时间从1420分钟减少到1145分钟，即活力增加275分钟（或+19.4%）。考虑到该结果取决于等离子体-晶种相互作用并且因此取决于晶种与等离子体之间的接触表面，在电介质阻挡装置中执行100个晶种堆叠的形貌建模。该模型导致种子-种子接触表面（276个接触代表230.6mm2的总面积）和种子-壁接触表面（134个接触代表105.9mm2的总面积）之间的区别。在单次等离子体处理后，每个种子的外壳92%暴露于等离子体：该值足够高以支持等离子体工艺的相关性，但也为工艺优化开辟了道路。在这种前景下，我们建议用“等离子体序列”取代单一的20分钟等离子体处理，即连续的较短等离子体处理，其总持续时间保持20分钟。在两个连续的等离子体处理之间，种子可以遵循捕获程序（种子在相同的位置和方向）或随机化程序（种子在相同位置但重新定向）或搅拌程序（剧烈摇动种子）。一个序列的10个等离子体处理（2分钟后）分开的短搅拌程序导致高达405分钟与275分钟的单等离子体处理20分钟的活力增益。我们建议理解这些结果通过相关的活力增益与种子的吸水率和其涂层的润湿性状态。
英文摘要：
Cold plasma technologies are an efficient approach to improve the germination properties of seeds, especially in a stacking configuration within a dielectric barrier device. In such dry atmospheric plasma priming process, we show that a He-N2 plasma treatment of 20 min can reduce the median germination time of lentil seeds from 1420 min to 1145 minutes, ie a gain in vigor of 275 min (or +19.4 %). Considering that this result depends on the plasma-seed interaction and therefore on the contact surfaces between the seeds and the plasma, a topographic modeling of a 100 seeds-stack is performed in the dielectric barrier device. This model drives to the distinction between the seed-seed contact surfaces (276 contacts standing for a total area of 230.6 mm2) and the seed-wall contact surfaces (134 contacts standing for a total area of 105.9 mm2). After a single plasma treatment, the outer envelope of each seed is 92% exposed to plasma: a value high enough to support the relevance of the plasma process but which also opens the way to process optimizations. In this outlook, we propose to replace the single 20-minute plasma treatment by a "plasma sequence", ie a succession of shorter plasma treatments whose total duration remains 20 min. Between two successive plasma treatments, the seeds can follow either a trapping procedure (seeds in same positions and orientations) or a randomizing procedure (seeds in same positions but reoriented) or a stirring procedure (seeds vigorously shaken). A sequence of 10 plasma treatments (upon 2 min) separated by short stirring procedures leads to a gain in vigor as high as 405 min vs 275 min for a single plasma treatment of 20 min. We propose to understand these results by correlating the gain in vigor with the water uptake of the seeds and the wettability state of their coating.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
