Tokyo University Maps Atomic Oxygen Production in Oxygen Plasma

Scientists at Tokyo Metropolitan University have developed a method to enhance the effectiveness of oxygen plasma for a range of industrial and medical applications. By applying a high voltage across pure oxygen gas, the researchers were able to generate plasma that produces a higher yield of reactive atomic oxygen, a key species responsible for the plasma’s antimicrobial and surface‑conditioning properties.

The team employed advanced diagnostic techniques to map the spatial and temporal distribution of atomic oxygen within the plasma. This detailed mapping revealed how the electric field and gas flow influence the concentration of reactive species, allowing the researchers to fine‑tune the plasma generation process. The improved control over atomic oxygen production is expected to boost the efficiency of plasma‑based sterilization, surface cleaning, and semiconductor fabrication processes.

The findings could lead to more reliable and energy‑efficient plasma systems across multiple sectors, from healthcare to electronics manufacturing. By providing a clearer understanding of atomic oxygen dynamics, the study offers a foundation for designing next‑generation plasma technologies that deliver consistent performance and higher safety standards.