[18p-A32-1~19] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18p-A32-10] Mechanism of microdroplet formation by the interaction between dielectric barrier discharge and liquid

〇(D)Ryosuke Watanabe¹, Natsuki Sugata¹, Daisuke Yoshino¹ (1.TUAT)

Keywords:

Dielectric barrier discharge,Liquid atomization,High-speed imaging

The technology of converting liquids into micro- and nano-sized mist is crucial for both everyday life and industry. However, it has been challenging to atomize high-viscosity and high-insulation liquids. We have developed a "plasma nanomist generator" and visualized the atomization mechanism using a high-speed camera. As a result, it was revealed that the device atomizes solutions in three modes: instability of the solution jet; physical fragmentation of the solution droplets by the impact of the plasma streamer; and collapse of the droplet surface and generation of a smoke-like mist during the streamer ejection from the solution droplet. These factors act in a chain reaction to generate the mist.