  Plasma plays a pivotal role in numerous applications spanning the fields of
medicine, industry, agriculture, and space exploration. When plasma interacts
with air, it initiates unique chemical reactions, resulting in the creation of
rare and highly sought-after reactive species. Typically, the generation of
plasma jets for interaction with air relies on resonant cavities to enhance
plasma efficiency. In this study, we have harnessed the innovative concept of
non-radiating sources, known as anapoles, which utilize the lowest order
multipoles specifically, electric-electric dipole interactions within a hybrid
metallo-dielectric structure. This approach enhances the near electric field,
facilitating gas breakdown for the realization of a plasma jet. The achievement
of a dielectric plasma jet is remarkable in its own right, particularly when
considering the open structure employed, which enables frequency tuning.
Furthermore, the prototype we have demonstrated surpasses existing plasma jet
technologies in several key aspects, including compactness, compatibility with
planar fabrication techniques, power efficiency, cost-effectiveness,
tunability, and a twofold increase in electron density compared to the highest
levels achieved to date. With these substantial enhancements, our proposed
device is poised to revolutionize the landscape of plasma source technology and
open up exciting avenues for exploring novel applications.
