2024-03-28T13:45:54Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00021709
2022-12-14T04:09:47Z
1221:1222
High-speed side-shooter using Leidenfrost phenomena
Sugioka, Hideyuki
Segawa, Satoru
Kubota, Mako
Liquid delivery systems are important in microfluidic applications. In this paper, we report a high-speed side-shooter using a simple plate-like hot protrusion placed on the lower edge of a hot slope. In particular, we experimentally show that the side-shooter launches a droplet with a high speed (similar to 15 cm/s). We propose a simple model to explain the side-shooting phenomenon; i.e., the hot protrusion causes an increase in the surface energy due to the formation of a new folded surface, which results from a new Leidenfrost phenomenon coupled with the protrusion, and therefore, the droplet can be launched at a high speed on the hot slope with a low friction due to the ordinary Leidenfrost phenomenon. A comparison of the theoretical results with the experimental results shows that they are in good agreement with each other. We believe that our side-shooter will play an important role in microfluidics in the future. Published under license by AIP Publishing.
Article
JOURNAL OF APPLIED PHYSICS.125(13):134502(2019)
journal article
AMER INST PHYSICS
2019-04-04
application/pdf
JOURNAL OF APPLIED PHYSICS
13
125
134502
0021-8979
AA11868165
https://soar-ir.repo.nii.ac.jp/record/21709/files/16K05650_01.pdf
eng
10.1063/1.5064429
https://doi.org/10.1063/1.5064429
© 2019 Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Appl. Phys. 125, 134502 (2019) and may be found at https://doi.org/10.1063/1.5064429.