Developing cost‐efficient large‐scale uniform plasma jets represents a significant challenge for high performance in material processing and plasma medicine. Here, a V–I characteristic modulation approach is proposed to reduce the discharge power and increase the plasma scale and chemical activity in non‐self‐sustained atmospheric direct‐current discharges. The electric field in discharge space is optimized to fundamentally empower simultaneously initiating all discharge cells far below Townsend breakdown potential and stably sustaining each plasma jet at low voltage. These strategies create a crucial step to fabricating a flexible and compact low‐power large‐scale uniform laminar plasma jet array (LPJA) with high activity in cheap argon. The mechanisms behind the discharge enhancement are revealed by combining V–I characteristic examination and a modulation model. Compared with conventional arrays, this LPJA possesses the widest size (90 mm) and raises its uniformity from 30% to 97%. Comparing different discharge modes shows that the LPJA scale is surprisingly increased nearly by 4 times with the discharge power reduced from 7.4 to 4.8 W. The methodology provides a highly cost‐efficient roadmap to break through the bottleneck of restricting low‐power discharge, large‐gap discharge, large‐scale discharge, parallel‐multi‐electrode discharge, and uniform discharge together. This advance will meet the urgent need for various plasma applications.

中文翻译：

---

非自持大气放电中通过 V-I 特性调制增强的高成本效益大型均匀层流等离子体射流阵列

开发具有成本效益的大规模均匀等离子体射流对材料加工和等离子体医学的高性能提出了重大挑战。在此，提出了一种V - I特性调制方法，以降低非自持大气直流放电中的放电功率并增加等离子体规模和化学活性。放电空间中的电场经过优化，可从根本上同时启动远低于汤森击穿电位的所有放电单元，并在低电压下稳定维持每个等离子体射流。这些策略为制造在廉价氩气中具有高活性的灵活且紧凑的低功率大规模均匀层流等离子体射流阵列（LPJA）创造了关键的一步。通过结合V - I特性检查和调制模型揭示了放电增强背后的机制。与传统阵列相比，该LPJA具有最宽的尺寸（90毫米），并将其均匀性从30%提高到97%。比较不同的放电模式表明，LPJA规模惊人地增加了近4倍，放电功率从7.4 W降低到4.8 W。该方法为突破限制小功率放电、大功率放电的瓶颈提供了一个极具成本效益的路线图。间隙放电、大范围放电、多电极并联放电、均匀放电等。这一进步将满足各种等离子体应用的迫切需求。