Abstract: The recently discovered Static Electricity-induced Luminescence (SEL) material,
SrAl₂O₄:Eu²⁺, exhibits the unique property of emitting luminescence in response to external energy generated by static electricity. This property addresses the long-standing challenge of visualizing static electricity, positioning the luminescence as a promising foundation for developing image-based static electricity sensing technologies. In this study, we developed a system for the quantitative evaluation of the SEL material using image analysis techniques. The experiment involved analyzing luminescence intensity and luminescence area of the SEL material over time under varying applied voltages. The results revealed a positive correlation between the applied voltage and both the luminescence intensity and the luminescence area. These findings highlight the effectiveness of the SEL material for quantitative assessment in static electricity sensing, offering significant potential for advancing static electricity visualization and measurement technologies.

Keywords: Static electricity induced luminescence; Image analysis