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Article Dans Une Revue Sensors and Actuators A: Physical Année : 2023

Stretchable piezoresistive textile yarn strain transducer for low deformation detection

Résumé

Stretchable piezoresistive transducers for strain sensing have been widely developed due to their remarkable sensitivity, elasticity, and cyclability. In this work, commercial elastane yarn (Lycra® 1880 dtex) is functionalized by a conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) with a dip-coating method. Poly(ethylene glycol) diacrylate (PEGDA) is used as a beneficial additive to improve the affinity between the elastic substrate and the conductive layer. Indicating a small modification of the yarn's mechanical properties, Young's modulus of 3.5 MPa is observed for the transducer. An initial resistance of 3487 Ω is measured for a length of 50 mm. After a training stage involving 100 stretching/releasing cycles to stabilize the electromechanical properties related to morphological structure, the transducer exhibits an average gauge factor of 25 for the interest strain range (0-5 %). Furthermore, the cyclability of the yarn is demonstrated by 10,000 deformation cycles with only a slight modification of the relative resistance variation.
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Dates et versions

hal-04253877 , version 1 (23-10-2023)

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Copyright (Tous droits réservés)

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Hankai Wu, Fabrice Seguin, Vladan Koncar, Cédric Cochrane, Laurent Dupont, et al.. Stretchable piezoresistive textile yarn strain transducer for low deformation detection. Sensors and Actuators A: Physical , 2023, 363, ⟨10.1016/j.sna.2023.114755⟩. ⟨hal-04253877⟩
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