Significant strain-rate dependence of sensing behavior in TiO2@carbon fibre/PDMS composites for flexible strain sensors

Zhang, Fan; Hu, Hailong; Hu, Shineng; Yue, Jianling

doi:10.1007/s40145-021-0509-7

Cited by 19 publications

(9 citation statements)

References 55 publications

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“…As a result of its intrinsic composition, which includes a high percentage of chromium, an oxide layer of chrome forms on the surface of stainless steel, preventing corrosion and ensuring long‐term stability. [ 26 ] Further, other conductive materials blended with polymers, such as graphene oxide (GO) with polyaniline (PANI), [ 27 ] molybdenum diselenide (MoSe 2 ) with polyvinyl alcohol (PVA), [ 28 ] titanium oxide (TiO 2 ) with carbon fiber, and polydimethylsiloxane (CF‐PDMS), [ 29 ] have also been explored in recent years envisioned to have a better prospect for application in e‐textiles.…”

Section: Introductionmentioning

confidence: 99%

A Novel Elastic Conductive Yarn for Smart Textile Applications

Shekhar,

Choudhry,

Islam

et al. 2023

Adv Eng Mater

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Conductive yarns are crucial for electrical connections in electronic textiles and are used in fabricating sensors, electrodes, and wearable communication devices. Challenges in conductive and elastic properties of conductive yarns, their durability and compatibility with existing manufacturing processes limit mass production and affordability of conductive yarn. This work investigates elastic, shell‐conductive, and non‐corrosive electro‐conductive yarns (ECYs) for textile‐based wearable electronics. The existing textile manufacturing processes (plaiting, coiling, and twisting) were used to fabricate different blend ratios of stainless‐steel conductive yarn and elastomeric yarn. The ECY samples were inspected for structural uniformity, conductive coverage, ability to be woven, thickness, and extensibility. The most promising ECY exhibited a breaking force of 10.87 N, a tenacity of 2.04 cN/tex, and an elongation at break of 61.1%, suitable for integration into e‐textiles where elasticity is required. ECY with conductive coverage of 85.36% provides better electrical connection points, while a thickness of 0.69 mm and linear density of 534 tex make it compatible with traditional textile manufacturing equipment. Our findings demonstrate that the fabrication method and input parameters significantly impact the properties of ECY, including their elasticity and conductive coverage. Utilising ECYs in fabric circuit boards, can enable improved smart wearables for sustainable and modular integration of electronic components.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

A Novel Elastic Conductive Yarn for Smart Textile Applications

Shekhar,

Choudhry,

Islam

et al. 2023

Adv Eng Mater

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“…A wide range of polymers and nanomaterials have been processed to develop flexible sensors [ 32 , 33 ], which have been selected based on the applications of the prototypes. Regarding the polymers, some of the common ones include polydimethylsiloxane (PDMS) [ 34 , 35 , 36 ], polyethylene terephthalate (PET) [ 37 , 38 , 39 ], polyimide (PI) [ 40 , 41 , 42 ], and polyethylene naphthalate (PEN) [ 43 , 44 , 45 ]. These polymers have been either used to form the substrates of the sensors or as the polymer matrix in the nanocomposites, where the nano-fillers have been added at defined proportions.…”

Section: Introductionmentioning

confidence: 99%

Integration of Different Graphene Nanostructures with PDMS to Form Wearable Sensors

Zhang

Gao

et al. 2022

Nanomaterials

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This paper presents a substantial review of the fabrication and implementation of graphene-PDMS-based composites for wearable sensing applications. Graphene is a pivotal nanomaterial which is increasingly being used to develop multifunctional sensors due to their enhanced electrical, mechanical, and thermal characteristics. It has been able to generate devices with excellent performances in terms of sensitivity and longevity. Among the polymers, polydimethylsiloxane (PDMS) has been one of the most common ones that has been used in biomedical applications. Certain attributes, such as biocompatibility and the hydrophobic nature of PDMS, have led the researchers to conjugate it in graphene sensors as substrates or a polymer matrix. The use of these graphene/PDMS-based sensors for wearable sensing applications has been highlighted here. Different kinds of electrochemical and strain-sensing applications have been carried out to detect the physiological signals and parameters of the human body. These prototypes have been classified based on the physical nature of graphene used to formulate the sensors. Finally, the current challenges and future perspectives of these graphene/PDMS-based wearable sensors are explained in the final part of the paper.

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“…Conventional TENGs mainly depend on two electroaffinity polymers to produce alternating current (AC) via contacting and separating processes. Most of the polymers used in TENGs, such as polyvinylidene fluoride and its copolymers, , polydimethylsiloxane, − fluorinated ethylene propylene, − polyurethane, and so on, are non-degradable polymers. These synthetic materials are usually expensive and also harmful to the environment .…”

Section: Introductionmentioning

confidence: 99%

Dyeing-Inspired Sustainable and Low-Cost Modified Cellulose-Based TENG for Energy Harvesting and Sensing

Yao

Zhou

Zhang

et al. 2022

ACS Sustainable Chem. Eng.

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A combination of a triboelectric nanogenerator (TENG) and natural wood presents a sustainable approach toward a smart home due to the wood’s biodegradability, low cost, and abundant resource. Major challenges for achieving a cellulose-based TENG are the brittleness, low crystallinity, and low surface charge density. We demonstrated a facile method to process and modify natural wood to satisfy application requirements. The treated wood has both good flexibility and tensile mechanical properties. After pressing, its crystallinity also saw a big increase, with the figure almost tripled. A further surface modification was inspired by dyeing technology. The cellulose on the surface of wood was cationically modified by 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTAC) via the solution-immersion method. After modification, the surface potential increased two times compared to that of the unmodified one. Density functional theory was used to calculate the absorption energy between cellulose molecules and CHPTAC to further verify the feasibility of the chemical modification. Larger differences between the two tribo-layers in terms of the energy level produce a high electrostatic charge flow. The modified pressed wood-based TENG can generate a peak current of 9.74 μA, a voltage of 335 V, and a transferred charge density of 71.45 μC/m2 through contact electrification. A concept of a self-powered and sensing smart floor integrated with this modified cellulose-based TENG was further developed to provide real-time motion monitoring for a smart home. This work not only removes the wood brittleness but also puts forward a novel method to improve the wood surface charge density from an interdisciplinary perspective, which is crucial to facilitate the application of natural wood in the nanogenerator area.

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Significant strain-rate dependence of sensing behavior in TiO2@carbon fibre/PDMS composites for flexible strain sensors

Cited by 19 publications

References 55 publications

A Novel Elastic Conductive Yarn for Smart Textile Applications

A Novel Elastic Conductive Yarn for Smart Textile Applications

Integration of Different Graphene Nanostructures with PDMS to Form Wearable Sensors

Dyeing-Inspired Sustainable and Low-Cost Modified Cellulose-Based TENG for Energy Harvesting and Sensing

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