[23p-12G-1~14] CS.7 Code-sharing Session of 6.5 & 7.5

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[23p-12G-14] Direct Observation of Surface Microbubble Shapes

Koji Takahara¹, 〇Satoru Suzuki¹ (1.LASTI, Univ of Hyogo)

Keywords:

microbubble,contact angle

Based on previous AFM studies, surface nano(micro)bubbles are considered to have a very flat shape, unlike macro surface bubbles. Here, we directly observed the shape of surface microbubbles using an optical microscope. As a result, no flat bubbles were observed. Furthermore, by controlling the surface tension of the liquid and the wettability of the substrate, we succeeded in forming bubbles with a contact angle of approximately 180 degrees (spherical shape).