Electrical conductivity of nanocomposites metal-carbon nanotubes

Mykhailova, H. Yu.; Koval'chuk, B. V.; Bozbey, Yu. F.; Dekhtyarenko, V. А.

doi:10.1557/s43579-023-00345-2

Cited by 1 publication

(1 citation statement)

References 27 publications

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“…[14][15][16][17][18][19] Typically, they are constructed using conductive sensing materials combined with elastomeric substrates, [11,20] such as polyurethane, [21,22] polydimethylsiloxane (PDMS), [16,23,24] natural rubber (NR), [25,26] and so on. The most commonly used strain sensing materials include carbon nanomaterials (carbon black, [24] carbon nanotubes, [27] and Mxene, [28,29] ), metal nanomaterials (silver nanowires [30] and silver nanoparticles [31] ), and intrinsic conducting polymers such as polyaniline (PANI), [32] polypyrrole (PPy), [33] and poly (3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS). [34] Excellent flexible strain sensors require a combination of a wide workable strain range and high sensitivity, which, in turn, necessitates high stretchability and a reliable sensing mechanism.…”

Section: Introductionmentioning

confidence: 99%

Stretchable and Highly Sensitive Flexible Strain Sensor Based on a Three‐Layer Core–Shell Structure of Polydopamine/Polypyrrole@Natural Rubber for Human Activity Monitoring

Zhan,

Yuan,

Zhang

et al. 2024

Adv Eng Mater

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In recent years, flexible strain sensors with a wide detection range and high sensitivity have garnered significant attention for human health monitoring. However, fabricating strain sensors with a broad strain range while retaining high sensitivity remains a major challenge. Here, a green and facile method is successfully developed to fabricate the PDA/PPy@NR‐based strain sensor with a three‐layer core‐shell structure. Polydopamine (PDA) and polypyrrole (PPy) are coated uniformly onto the surface of the natural rubber (NR) nanosphere by in‐situ polymerization. The electromechanical and strain sensing properties of the fabricated composite are investigated. The homogeneous coating of PPy and PDA layers has facilitated the formation of continuous conductive pathways within the NR matrix, even at low loading levels. Consequently, the strain sensor exhibits remarkable sensitivity over a wide strain range (∽800%) and long‐term reliability (2500 cycles at 50%). The PDA/PPy@NR strain sensor shows an exceptionally high gauge factor (GF) value (142.6) and a short response time (125 ms). Furthermore, this PDA/PPy@NR strain sensor could effectively detect and capture subtle and large human movements such as limb joints and facial movements as well as even distinguish the pronunciation of different words. The PDA/PPy@NR strain sensor holds great promise for integration into flexible wearable electronics.This article is protected by copyright. All rights reserved.

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