[17a-WL2_301-1~11] 3.1 Basic optics and frontier of optics

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17a-WL2_301-10] Stability of Bubble Position and Marangoni-Driven Behavior in Laser-Heated Spheres

〇Hiroto Yamada¹, Sosuke Omata¹, Yuta Futamata¹, Pengnian Zhao^1,2, Lan Chen^1,2, Satoshi Honma¹, Hironori Ito¹ (1.Univ. of Yamanashi, 2.Hangzhou Dianzi Univ.)

Keywords:

laser,marangoni,precision operation

This study proposes a method for moving objects by generating bubbles through laser irradiation and utilizing the resulting Marangoni flow as a driving force. Previous results indicate that localized high-temperature regions formed on the sphere's surface determine the bubble position, while the thermal gradient spreading across the entire sphere likely governs the strength of the Marangoni driving force. Therefore, we clarified the correlation between the temperature distribution and the thermal gradient across the entire sphere, on one hand, and the bubble position and the Marangoni driving force, on the other, through both numerical analysis and experiments.