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Article Dans Une Revue Journal of the Royal Society Interface Année : 2019

Probing in-mouth texture perception with a biomimetic tongue

Résumé

An experimental biomimetic tongue-palate system has been developed to probe human in-mouth texture perception. Model tongues are made from soft elastomers patterned with fibrillar structures analogue to human filiform papillae. The palate is represented by a rigid flat plate parallel to the plane of the tongue. To probe the behavior under physiological flow conditions, deflections of model papillae are measured using a novel fluorescent imaging technique enabling sub-micrometer resolution of the displacements. Using optically transparent newtonian liquids under steady shear flow, we show that deformations of the papillae allow determining their viscosity from 1 Pa.s down to the viscosity of water of 1 mPa.s, in full quantitative agreement with a recently proposed model [Lauga et al., Frontiers in Physics 4, 35 (2016)]. The technique is further validated for a shear-thinning and optically opaque dairy system.
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Dates et versions

hal-03079558 , version 1 (18-12-2020)

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Jean-Baptiste Thomazo, Javier Contreras Pastenes, Christopher Pipe, Benjamin Le Révérend, Elie Wandersman, et al.. Probing in-mouth texture perception with a biomimetic tongue. Journal of the Royal Society Interface, 2019, 16 (159), pp.20190362. ⟨10.1098/rsif.2019.0362⟩. ⟨hal-03079558⟩
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