TY - DATA T1 - Data underlying the publication - Sliding Speed Influences Electrovibration-Induced Finger Friction Dynamics on Touchscreens PY - 2025/08/17 AU - Jagan K Balasubramanian AU - Daan Pool AU - Yasemin Vardar UR - DO - 10.4121/d9f05363-d7d3-411a-9f3a-d78e49b4d3c5.v1 KW - Electrovibration KW - surface haptics KW - Biotribology KW - Skin mechanics KW - Finger-surface friction KW - Texture rendering N2 -

This study investigates how exploration conditions affect electrovibration-induced finger friction on touchscreens and the role of skin mechanics. Ten participants slid their index fingers across an electrovibration-enabled touchscreen at five speeds ($20\sim100$~mm/s) and force levels ($0.2\sim0.6$~N). Contact forces and skin accelerations were measured while applying amplitude-modulated voltage signals spanning the tactile frequency range. The finger-display interaction was modeled as a first-order system and the skin mechanics as a mass-spring-damper system. Results showed that higher sliding speeds increased the cutoff frequency of the interaction response, likely due to higher finger stiffness. Inter-participant variability affected the model parameters of both responses. Based on these findings, a speed-dependent friction model was developed to deliver consistent electrovibration stimuli across varying exploratory conditions.

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