Relationship between friction and wear characteristics of nanosheets and tactile memory using electroencephalograph

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K04243
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 18040:Machine elements and tribology-related
• Research Institution: Tokai University
• Principal Investigator: SUNAMI YUTA 東海大学, 工学部, 准教授 (10709702)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: ナノシート / トライボロジー / 摩擦係数 / バイオミメティクス / 接着力 / 摩耗

Outline of Final Research Achievements

In this study, nanosheets, which were previously produced by spin coating, are mass-produced using roll-to-roll technology, a method that dramatically improves productivity. In addition, optimal production conditions are explored to control the thickness of the nanosheets. The film thickness of the resulting nanosheets is measured, and then the friction coefficient between the nanosheet attached to a silicon substrate and a finger is measured using a load cell that can simultaneously measure normal load and friction force, and the friction coefficient is calculated from these values. At that time, the wear state of the nanosheet is also observed on the surface using FE-SEM, etc.
Next, a shark skin mold was made using PDMS, and the nanosheet was attached to its surface to examine the adhesiveness of bacteria.

Free Research Field

トライボロジー

Academic Significance and Societal Importance of the Research Achievements

本研究課題では，ナノシートの大量生産方法とそのトライボロジー特性について実験的に検討した．本研究では将来の医療分野を視野に入れて指とナノシート間の摩擦係数を測定し，膜厚さが薄くなるほど摩擦力が大きくなることを確認した．また，その際の摩耗状態についても定性的に観察した．さらに，ナノシートの接着力についても実験的に検討し，膜厚さ依存性があることがわかった．次に，鮫肌の型にナノシートを貼付することで細菌の接着力が低下することを確認した．
これらの成果は，ナノシートの基礎特性を明らかにしたことに学術的な意義があり，かつナノシートを大量生産できる製作条件を見出したことは社会的意義があると確信している。