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Surface textures modulate tactile perception
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AI
DOI：10.1088/2051-672X/ae2d7a.png)
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Abstract
En 中文
Surface texture affects how surfaces are perceived. During contact between a finger and an object, mechanical stimuli propagate from the skin surface to the sites of our tactile mechanoreceptors. By changing the material, geometric and interfacial properties of these countersurfaces, product designers may modulate the elicited mechanical stimuli to deliver more functional and desirable sensations to consumers. We investigate the sliding contact between a finger and a variety of rigid sinusoidal surface textures using a numerical model. A parametric study was conducted in which the wavelength and amplitude of surface textures were varied whilst stimulation of the mechanoreceptors within the finger was recorded. It was found that the wavelength of the countersurface is more significant parameter than its amplitude. Particularly, when surface wavelengths were commensurate to that of the fingerprint, elevated and highly oscillatory strain energy density signals were experienced at each of the receptor sites. In these scenarios, increases in amplitude of the countersurface further elevate the mechano- stimulation, whilst this was substantially attenuated when the finger slides against non-commensurate surface textures. The obtained results can be used in conjunction with perceptive data to elicit or tune targeted sensations, for instance by designing specific surface textures for products and packaging, or by modifying the skin surface properties through cosmetic application.
Keywords:
textures
modulate
tactile
perception
finite elements
mechanoreception
Journal
S
IF:
2.4
Papers:
77
Citations:
0