Wide-range sensitive all-textile piezoresistive sensors assembled with biomimetic core-shell yarn via facile embroidery integration

Recent progress in flexible pressure sensors based on multiple microstructures: from design to application

“…For example, Ke et al prepared a cytoskeletal core-shell yarn (CCSY) consisting of an inner silverplated nylon electrode and an outer sensing layer. 121 Due to the great flexibility and weave-ability of CCSY, a fabric PS with excellent breathability was prepared by a simple embroidery technique (Fig. 2f 1 and f 2 ).…”

Versatile nano–micro collagen fiber-based wearable electronics for health monitoring and thermal management

“…12–15 Piezoresistive strain sensors are widely explored due to their simple structural design, facile device preparation, and easy data visualization. 16–18…”

“…[12][13][14][15] Piezoresistive strain sensors are widely explored due to their simple structural design, facile device preparation, and easy data visualization. [16][17][18] Piezoresistive strain sensors were assembled by forming a percolation network by dispersing conductive nanomaterials in exible polymer matrices. [19][20][21][22] To solve the possible nonlinear response of these sensors within a wide detection range and the large hysteresis behavior caused by an irreversible change to the conductive pathway, the microstructure on the piezoresistive strain sensors' conductive pathway was subtly designed.…”

Piezoresistive Fibers with Large Working Factors for Strain Sensing Applications

“…20−23 These fibers offer extreme flexibility and allow for easy integration into clothing using traditional textile processes like weaving, sewing, and knitting. 21,24,25 Despite their large deformability (>500% strain) and high sensitivities, 26 piezoresistive nanocomposite fibers show very small working factors (W ≤ 5%). 27,28 This is due to the small yield strains (ε c ) for polymer hosts, 15 which closely correlate with W for most piezoresistive nanocomposite materials.…”

“…Fabrication of these nanocomposites requires blending such stretchable polymers with mostly carbon-based fillers like nanotubes, carbon black (CB), conductive polymers, and graphene − to improve their conductivity. For piezoresistive nanocomposites targeting the market for wearable electronics, elastomer-based stretchable nanocomposite fibers have been particularly pursued. − These fibers offer extreme flexibility and allow for easy integration into clothing using traditional textile processes like weaving, sewing, and knitting. ,, Despite their large deformability (>500% strain) and high sensitivities, piezoresistive nanocomposite fibers show very small working factors ( W ≤ 5%). , This is due to the small yield strains (ε c ) for polymer hosts, which closely correlate with W for most piezoresistive nanocomposite materials. , Thus, the performances of these materials are reliably restricted to the elastic regime . Furthermore, conductive filler inclusions in the polymer matrix increase the stiffness of the resultant piezoresistive nanocomposite fibers.…”