Recent advances in the material design for intelligent wearable devices

Wu, Yuhang; Li, Yuwen; Ye, Tao; Sun, Lingyun; Yu, Chunyang

doi:10.1039/d3qm00076a

Cited by 25 publications

(11 citation statements)

References 211 publications

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“…For skin on applications of devices, whereby the nanocomposite is worn on the surface of the skin, they must present Young's moduli (Y) similar to skin (i.e. Y < 300 kPa) [12,222,223]. The stiffness of a device is of such critical important due to the potential for signal dampening if a nanocomposite is too stiff.…”

Section: Suitability For Applicationmentioning

confidence: 99%

Performance analysis of solution-processed nanosheet strain sensors—a systematic review of graphene and MXene wearable devices

Boland

2024

Nanotechnology

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Nanotechnology has led to the realisation of many potential Internet of Things devices that can be transformative with regards to future healthcare development. However, there is an over saturation of wearable sensor review articles that essentially quote paper abstracts without critically assessing the works. Reported metrics in many cases cannot be taken at face value, with researchers overly fixated on large gauge factors. These facts hurt the usefulness of such articles and the very nature of the research area, unintentionally misleading those hoping to progress the field. Graphene and MXenes are arguably the most exciting organic and inorganic nanomaterials for polymer nanocomposite strain sensing applications respectively. Due to their combination of cost-efficient, scalable production and device performances, their potential commercial usage is very promising. Here, we explain the methods for colloidal nanosheets suspension creation and the mechanisms, metrics and models which govern the electromechanical properties of the polymer-based nanocomposites they form. Furthermore, the many fabrication procedures applied to make these nanosheet-based sensing devices are discussed. With the performances of 70 different nanocomposite systems from recent (post 2020) publications critically assessed. From the evaluation of these works using universal modelling, the prospects of the field are considered. Finally, we argue that the realisation of commercial nanocomposite devices may in fact have a negative effect on the global climate crisis if current research trends do not change.

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Section: Suitability For Applicationmentioning

confidence: 99%

Performance analysis of solution-processed nanosheet strain sensors—a systematic review of graphene and MXene wearable devices

Boland

2024

Nanotechnology

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“…Polymeric materials responsive to surrounding stimuli have been extensively developed for multifunctional wearable devices, necessitating flexibility, high sensitivity in response to external stimuli, and adaptive integration processes [ 1 , 66 ]. In addition, polymers with high electron affinity, such as fluorinated polymers and polydimethylsiloxane, Refs.…”

Section: Multilayer-structured Triboelectric Materials With Multifunc...mentioning

confidence: 99%

Multilayered Functional Triboelectric Polymers for Self-Powered Wearable Applications: A Review

Kim

2023

Micromachines

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Multifunctional wearable devices detect electric signals responsive to various biological stimuli and monitor present body motions or conditions, necessitating flexible materials with high sensitivity and sustainable operation. Although various dielectric polymers have been utilized in self-powered wearable applications in response to multiple external stimuli, their intrinsic limitations hinder further device performance enhancement. Because triboelectric devices comprising dielectric polymers are based on triboelectrification and electrostatic induction, multilayer-stacking structures of dielectric polymers enable significant improvements in device performance owing to enhanced interfacial polarization through dissimilar permittivity and conductivity between each layer, resulting in self-powered high-performance wearable devices. Moreover, novel triboelectric polymers with unique chemical structures or nano-additives can control interfacial polarization, allowing wearable devices to respond to multiple external stimuli. This review summarizes the recent insights into multilayered functional triboelectric polymers, including their fundamental dielectric principles and diverse applications.

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“…On the other hand, significant attention has been dedicated to wearable electronics, − which play a pivotal role in advancing motion recognition and detection, , human–machine interaction, , and intelligent robotics . Exploring innovative sensitive materials and structural designs represents a time and cost-efficient approach to developing advanced wearable devices with properties of high sensitivity, wide detection range, and enhanced stability and durability. ,− Various sensitive materials have been documented, including zero-dimensional metal nanoparticles, one-dimensional conductive polymer fibers and metal nanowires, , as well as two-dimensional graphene and graphene-like materials. , …”

Section: Introductionmentioning

confidence: 99%

Facile Graphene Oxide Modification Method via Hydroxyl-yne Click Reaction for Ultrasensitive and Ultrawide Monitoring Pressure Sensors

Hu,

Lu,

Zheng

et al. 2024

ACS Appl. Mater. Interfaces

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Enhancing the durability and functionality of existing materials through sustainable pathways and appropriate structural design represents a time-and costeffective strategy for the development of advanced wearable devices. Herein, a facile graphene oxide (GO) modification method via the hydroxyl-yne click reaction is present for the first time. By the click coupling between propiolate esters and hydroxyl groups on GO under mild conditions, various functional molecules are successfully grafted onto the GO. The modified GO is characterized by FTIR, XRD, TGA, XPS, and contact angle, proving significantly improved dispersibility in various solvents. Besides the high efficiency, high selectivity, and mild reaction conditions, this method is highly practical and accessible, avoiding the need for prefunctionalizations, metals, or toxic reagents. Subsequently, a rGO-PDMS sponge-based piezoresistive sensor developed by modified GO-P2 as the sensitive material exhibits impressive performance: high sensitivity (335 kPa −1 , 0.8−150 kPa), wide linear range (>500 kPa), low detection limit (0.8 kPa), and long-lasting durability (>5000 cycles). Various practical applications have been demonstrated, including body joint movement recognition and real-time monitoring of subtle movements. These results prove the practicality of the methodology and make the rGO-PDMS sponge-based pressure sensor a real candidate for a wide array of wearable applications.

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Recent advances in the material design for intelligent wearable devices

Abstract: With the rapid development of intelligent devices, medical devices, flexible robots, and other fields, it is an inevitable trend of future development for intelligent wearable devices to replace traditional bulky...

Cited by 25 publications

References 211 publications

Performance analysis of solution-processed nanosheet strain sensors—a systematic review of graphene and MXene wearable devices

Performance analysis of solution-processed nanosheet strain sensors—a systematic review of graphene and MXene wearable devices

Multilayered Functional Triboelectric Polymers for Self-Powered Wearable Applications: A Review

Facile Graphene Oxide Modification Method via Hydroxyl-yne Click Reaction for Ultrasensitive and Ultrawide Monitoring Pressure Sensors

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