2021 Fiscal Year Annual Research Report

Effect of liquid flow on the forces and physical properties of surfaces in liquids

Research Project

Project/Area Number	19K05264
Research Institution	Shinshu University
Principal Investigator	マクナミーキャシー信州大学, 学術研究院繊維学系, 教授 (40504551)
Co-Investigator(Kenkyū-buntansha)	小川智之東北大学, 工学研究科, 准教授 (50372305)
Project Period (FY)	2019-04-01 – 2022-03-31
Keywords	Force experiments / Data analysis / Discussion / Manuscript preparation
Outline of Annual Research Achievements	We prepared surfaces with a controlled roughness by using silica nanoparticles (NPs). We used these surfaces to determine how the roughness of a surface affects how a liquid flow changes the forces acting between a smooth silica surface and these rough surfaces [preparation of manuscript concerning effect of roughness on the forces]. The effect of a liquid flow and surface roughness on an attractive electrostatic force was also commenced, by using titanium dioxide NPs to form a rough surface. The forces were measured between a negatively charged silica particle and these positively titanium dioxide NPs surfaces, giving an attractive electrostatic force. These results are now being summarized, in order to publish in a manuscript.

(2 results)