Presentation Information
[7a-N106-5]Analysis of spherical heat conduction characteristics and bubble trapping position for marangoni-driven phenomena
〇Hiroto Yamada1, Sosuke Omata1, Yuta Futamata1, Pengnian Zhao2, Lan Chen2, Satoshi Honma1, Hironori Ito1 (1.Univ. of Yamanashi, 2.Hangzhou Dianzi Univ.)
Keywords:
laser,marangoni,precision operation
In this study, we aim to predict the bubble trapping position that acts as the driving source of Marangoni flow by analyzing the temperature distribution of a sphere under laser heating through heat conduction simulation. Unlike conventional Marangoni-driven transport on flat gas-liquid interfaces, this approach uses intentionally generated bubbles in liquid to create local interfaces that induce strong Marangoni flows. Our simulations revealed that the heat conduction characteristics of the spherical material significantly affect the temperature distribution on the sphere’s surface and the location where bubbles are trapped. The highest temperature point was found to act as the trapping point for bubbles, which is critical for driving force generation. These findings provide insights for precise manipulation of objects in liquids using Marangoni-driven phenomena, contributing to the development of non-contact micro-object transport and microfluidic control.