Reproduction of tactile perception in sliding friction of fingers using pseudo-tactile "weight" perception

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04146
• 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: Tokyo Institute of Technology
• Principal Investigator: AOKI SAIKO 東京工業大学, 物質理工学院, 准教授 (30463053)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 指の摩擦 / 疑似触覚 / 皮膚水和状態 / 表面粗さ / 触感

Outline of Final Research Achievements

Focusing on surface roughness and hydration state of fingertip skin as stimulating factors for tactile perception, we conducted friction measurements and tactile perception tests of fingers on glass surfaces with different surface roughness. The hydration state of finger caused differences not only in friction coefficient but also in its stability. Perceived slipperiness and touch feeling were expressed as psychometric values and compared to the friction properties of finger. Perceived slipperiness was dependent on the hydration state of finger and correlated with the friction coefficient and its stability, while touch feeling was correlated with the physical properties of the material surface and showed no correlation with friction. Perceived slipperiness correlated with interfacial phenomena such as the hydration state of the finger and the friction coefficient can be quantitatively expressed using psychometric values.

Free Research Field

トライボロジー，潤滑油，感性工学

Academic Significance and Societal Importance of the Research Achievements

表面粗さ，指先皮膚の水和状態，画面応答遅れなど触感刺激因子と指の摩擦特性との相関分析により，すべり感など界面現象に関連のある触感を定量的に表現することができ，これは学術的独自性の高い成果である．触感の定量的表現を発展させて視覚刺激や摩擦刺激により擬似的な「重み」感覚を再現することが可能になれば，触感を制御する新たなインターフェースの開発が期待できる．