Development of the biofilm removal technique by the slurry jet erosion method using nanoparticles

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656111
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: University of Fukui
• Principal Investigator: IWAI Yoshiro 福井大学, 工学(系)研究科(研究院), 教授 (40115291)
• Co-Investigator(Kenkyū-buntansha): MIYAJIMA Toshiro 富山県立大学, 工学部, 講師 (60397239)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: バイオフィルム / 酸化チタン / ウェットブラスト / スラリージェットエロージョン / MSE / 機能表面 / 紫外線照射

Outline of Final Research Achievements

Recently, the technique to impart biocompatibility and also clean biomaterials is required. In this study, we investigated physical cleaning metallic materials and imparted photocatalytic function. We used wet blast technique as physical cleaning for the specimen of stainless steel (SUS316L). The projection particles were nanoparticles of titanium dioxide (TiO2). It was possible to impart photocatalytic function to the processed surface by controlling the air pressure (Pair), slurry pressure (Pslu) and processing time.　It was possible to remove biofilms of Bacillus natto and also impart photocatalytic function on the surface after cleaning. We found that the cleaning method using the wet blast technique for metallic materials has a possibility of physical cleaning and the photocatalytic function imparting.

Free Research Field

工学