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Feeling Smooth: Psychotribological Probing of Molecular Composition
RISE Res Inst Sweden, Biosci & Mat, S-11428 Stockholm, Sweden..
RISE Res Inst Sweden, Biosci & Mat, S-11428 Stockholm, Sweden..
RISE Res Inst Sweden, Biosci & Mat, S-11428 Stockholm, Sweden..
RISE Res Inst Sweden, Biosci & Mat, S-11428 Stockholm, Sweden.;Tobii AB Publ, Box 743, S-18217 Danderyd, Sweden..
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2018 (Engelska)Ingår i: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 66, nr 4, artikel-id 138Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The aim of this study was to evaluate whether smooth surfaces varying in surface chemistry could be perceptually distinguished with the sense of touch. A set of ten glass surfaces was prepared which varied systematically in terms of the molecular composition of a thin coating of low topography. The contact angle, contact angle hysteresis, and surface energy were evaluated as objective physical parameters characterizing each coating. Additionally, the interaction forces between a human finger and the different coatings were quantified and compared in terms of tactile friction coefficients. The surfaces were evaluated psychophysically in terms of perceived similarities and were then ranked according to pleasantness. The participants could perceptually distinguish between surfaces varying in surface chemistry and a primary and secondary perceptual dimension were identified as sufficient to distinguish them. The primary dimension correlates with surface free energy, but both tactile friction and surface energy contribute to this dimension depending on whether the coatings are organic or inorganic. The secondary dimension could not be identified explicitly in terms of a physical quantity but is discussed in terms of recent developments in the literature. Coated glass is characterized by high friction coefficient upon interaction with a human finger as well as significant hysteresis in the stroking directions (lower applied load and higher friction in the backward stroke). Despite the complexity of the tribology, pleasantness can be clearly linked to it, where low friction (high contact angle) materials receive a higher ranking.

Ort, förlag, år, upplaga, sidor
Plenum Publishing, 2018. Vol. 66, nr 4, artikel-id 138
Nyckelord [en]
Tactile perception, Tactile discrimination, Surface chemistry, Psychotribology, Biotribology, Index finger, Tactile friction, Active touch
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URN: urn:nbn:se:kth:diva-235993DOI: 10.1007/s11249-018-1077-zISI: 000445957200001Scopus ID: 2-s2.0-85067635899OAI: oai:DiVA.org:kth-235993DiVA, id: diva2:1255790
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QC 20181015

Tillgänglig från: 2018-10-15 Skapad: 2018-10-15 Senast uppdaterad: 2025-02-14Bibliografiskt granskad

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Rutland, Mark W.

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