Design of a soft sensor based on silver-coated polyamide threads and stress-strain modeling via Gaussian processes DOI Creative Commons
Carmen Ballester, Víctor Muñoz, Dorin Copaci

et al.

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 367, P. 115058 - 115058

Published: Jan. 21, 2024

The demand for reliable and efficient soft sensors has grown exponentially with the evolution of wearable devices smart textiles. However, existing often face challenges related to hysteresis, noise, accuracy, hindering their seamless integration into practical applications. Our research presents a pioneering stress–strain sensor model based on silver-coated polyamide threads, augmented additional silicone graphite coatings enhanced properties. Specifically, coating proves instrumental in elevating sensor’s gauge factor reducing resulting heightened accuracy. extensive data analysis reveals presence hysteresis non-linearities; however, our exhibits remarkable robustness, as indicated by high Spearman correlation coefficient values. In context system identification, comparative between traditional regression methods Gaussian Process (GPs) Regression demonstrates superior performance GPs: this technique outperforms conventional techniques, obtaining 8.75 ± 4.06% Root Mean Square Error (RMSE) compared 12.70 7.04% error observed methods. This not only advances field technology developing an accurate, affordable adaptable device, but also offers valuable insights highly effective identification techniques tailored devices.

Language: Английский

A review on flexible wearables – Recent developments in non-invasive continuous health monitoring DOI
Nikolay L. Kazanskiy, Svetlana N. Khonina,

Muhammad A. Butt

et al.

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 366, P. 114993 - 114993

Published: Jan. 2, 2024

Language: Английский

Citations

69
Electrospun thermoplastic polyurethane membrane decorated with carbon nanotubes: A platform of flexible strain sensors for human motion monitoring DOI Creative Commons
Zijian Wu, Xuesong Deng, Xin Yu

et al.

Polymer, Journal Year: 2024, Volume and Issue: 303, P. 127120 - 127120

Published: May 1, 2024

A piezoresistive flexible strain sensor was developed using thermoplastic polyurethane elastomers (TPU) as the matrix and carbon nanotubes (CNTs) conductive fillers. Sensitivity, range, tensile cycling stability were concurrently considered during its design. Electrospun TPU fiber membranes prepared via electrospinning in this experiment, with controllable diameter achieved by adjusting rotational speed of receiving drum. CNTs incorporated into a polymer substrate through suction filtration to create sensor. The support structure electrospun film served carrier for uniformly adhering particles. Well-dispersed could more easily achieve uniform loading pore size film, thereby forming layer. This study initially determined influence content spinning solution on morphology membrane. Subsequently, effects CNT drum microstructure investigated, along their impact microstructure, mechanical properties, sensing performance CNTs/TPU (CT) sensors. results indicate that membrane under conditions mass fraction 20 wt% 100 r/min has larger average stable scaffold structure. sensor, filtering 10 mL concentration 2 mg/mL, exhibited best strength elongation at break 6.22 MPa 575%, respectively. Additionally, it demonstrated high sensitivity (GF=420.17 200% strain) excellent durability (300 cycle tests), enabling quick accurate responses movements various parts human body, meeting basic usage requirements

Language: Английский

Citations

45
Advanced electrospun AgNPs/rGO/PEDOT:PSS/TPU nanofiber electrodes: Stretchable, self-healing, and perspiration-resistant wearable devices for enhanced ECG and EMG monitoring DOI
Jia‐Wun Li,

Bo-Syuan Huang,

Ching-Hui Chang

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2023, Volume and Issue: 6(6)

Published: Dec. 1, 2023

Language: Английский

Citations

44
Interfacial-engineered robust and high performance flexible polylactic acid/polyaniline/MXene electrodes for high-perfarmance supercapacitors DOI Creative Commons
Zhaoyang Li,

Jiongru Li,

Bo Wu

et al.

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 203, P. 201 - 210

Published: April 12, 2024

Flexible supercapacitors with high mechanical strength, excellent flexibility, and performance are highly desired to meet the increasing demands of flexible electronics. However, trade-off between electrochemical properties remains challenging. In this context, an interface-engineered strategy approach was proposed construct polylactic acid (PLA)/polyaniline (PANI)/MXene film (PPM) electrodes for supercapacitor applications. PPM electrode, porous PLA prepared from nonsolvent-induced-phase-separation method served as ideal substrate, providing flexibility whereas PANI coupling agent, enhanced interfacial strength electroactive MXene that firmly anchored deposited on through a facile layer-by-layer dip coating method. The tensile at break, elongation toughness 53.09 MPa, 11.09%, 4.12 MJ/m3, respectively, much higher than those pure (29.36 4.62%, 0.75 MJ/m3). At optimum mass loading density 3 mg cm−2 MXene, fabricated PPM3 electrode achieved specific capacitance 290.8 F g−1 current 1 A in three-electrode setup, approximately 1.5 times 190.8 MXene. Meanwhile, symmetric all-solid-state based delivers 193.7 0.25 g−1, corresponding energy 9.3 Wh kg−1 power 291.3 W kg−1. SC retains 86% its original even bent 120° also possesses fire-retardant ability, demonstrating great potential safe wearable

Language: Английский

Citations

39
Tunable porous fiber-shaped strain sensor with synergistic conductive network for human motion recognition and tactile sensing DOI

Xiaoyan Yue,

Changqing Fang,

Qi‐Zhi Yao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 151853 - 151853

Published: May 9, 2024

Language: Английский

Citations

38
Advanced Functional Electromagnetic Shielding Materials: A Review Based on Micro-Nano Structure Interface Control of Biomass Cell Walls DOI Creative Commons

Yang Shi,

Mingjun Wu,

Shengbo Ge

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 20, 2024

Abstract Research efforts on electromagnetic interference (EMI) shielding materials have begun to converge green and sustainable biomass materials. These offer numerous advantages such as being lightweight, porous, hierarchical. Due their porous nature, interfacial compatibility, electrical conductivity, hold significant potential EMI Despite concerted the of been reported, this research area is still relatively new compared traditional In particular, a more comprehensive study summary factors influencing including pore structure adjustment, preparation process, micro-control would be valuable. The methods characteristics wood, bamboo, cellulose lignin in field are critically discussed paper, similar summarized analyzed. composite fillers various were reviewed. paper also highlights mechanism well existing prospects challenges for development trends field.

Language: Английский

Citations

37
Cellulose nanofibers-based composite film with broadening MXene layer spacing and rapid moisture separation for humidity sensing and humidity actuators DOI Creative Commons
Zhimao Li,

Wenjing Xu,

Kaixu Song

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 278, P. 134383 - 134383

Published: Aug. 3, 2024

Based on the basic idea of expanding interlayer spacing MXene, utilizing effect gallic acid-modified cellulose nanofibers for rapid moisture separation, flexible sensing and driving composite film with a perfect balance among humidity signal response mechanical properties was prepared. Inspired by stacking autumn fallen leaves, nanofibers-based films were formed self-assembly under vacuum filtration blending MXene. The enhanced (tensile strength 131.1 MPa, puncture load 0.88 N, tearing 165.55 N/mm, elongation at break 16.14 %), (the stable induced voltage 63.7 mV response/recovery time 3.2/5.1 s), (154.7° bending angle) observed. synergistic hydrogen bonds, "pinning effect" arising from side chains, hierarchical layered microstructure contributed to performance. This work exemplifies application green natural product preparing intelligent sensing, wearable devices, biomimetic robots.

Language: Английский

Citations

27
Sustainable compression-molded bamboo fibers/poly(lactic acid) green composites with excellent UV shielding performance DOI Creative Commons

Binqi Fei,

Haiyan Yang, Jing Yang

et al.

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 205, P. 247 - 257

Published: May 1, 2024

Language: Английский

Citations

26
An overview of flexible sensors from ionic liquid-based gels DOI
Xihua Cui,

Yangbin Xi,

Shiwen Tu

et al.

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 174, P. 117662 - 117662

Published: March 23, 2024

Language: Английский

Citations

25
Dielectric thermally conductive boron nitride/silica@MWCNTs/polyvinylidene fluoride composites via a combined electrospinning and hot press method DOI Creative Commons
Zijian Wu,

Shunying Gao,

Xuefei Wang

et al.

Journal of Materials Science Materials in Electronics, Journal Year: 2024, Volume and Issue: 35(15)

Published: May 1, 2024

Abstract With the development of microelectronics towards integration, miniaturization and high power, accumulation heat in this small space has become a serious problem. Therefore, polymer matrix composites with thermal conductivity electrical insulation need to be developed urgently. Here, an ordered oriented boron nitride/silicon dioxide (silica) coated multiwalled carbon nanotubes (BN/SiO 2 @MWCNTs) thermally conductive network was constructed polyvinylidene fluoride (PVDF) by electrostatic spinning technique, subsequently PVDF were prepared hot-pressing. The synergistic effect two-dimensional BN one-dimensional MWCNTs investigated. It found that out-of-plane 30 /SiO @MWCNTs reached 0.4693 Wm −1 K , which 209% higher than pure 10% BN/PVDF composites. in-plane @MWCNts) 1.5642 1055% 40% This is attributed on SiO @MWCNTs. Meanwhile, volume resistivity breakdown strength BN/SiO @MWCNTs/PVDF 3.6 × 10 13 Ω m 47.68 kV/mm, respectively. results indicate have excellent insulating properties, are promising for applications.

Language: Английский

Citations

19