Understanding the Origin of Tensile Response in a Graphene Textile Strain Sensor with Negative Differential Resistance

Yang, Qisheng; Liu, Ning; Yin, Jiaju; Tian, He; Yang, Yi; Ren, Tian‐Ling

doi:10.1021/acsnano.2c04348

Cited by 26 publications

(15 citation statements)

References 46 publications

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“…The relative displacement between the fabric networks is greater when the strain value is higher and stretched to its maximum value, resulting in a more pronounced NDR effect in the releasing cycle. 38 As the uniaxial strain increases, the radius of the fabric bundles decreases, signifying that the fabric bundles are positioned close together (Figure S3). Moreover, at the same magnification, higher uniaxial strain causes more fabric bundles to become visible and causes higher relative fabric network displacement.…”

Section: Resultsmentioning

confidence: 99%

“…In actuality, the NDR effect stems from the relative displacement between the fabric bundles. The relative displacement between the fabric networks is greater when the strain value is higher and stretched to its maximum value, resulting in a more pronounced NDR effect in the releasing cycle …”

Section: Resultsmentioning

confidence: 99%

“…Yang 38 carefully analyzed the movement of fibers under strain. They showed that the contacting parts among the fiber network exhibit the most strain-induced shape changes and deformation.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Stretchable Ink Printed Graphene Device with Weft-Knitted Fabric Substrate Based on Thermal-Acoustic Effect

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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Thermal-acoustic devices have great potential as flexible ultrathin sound sources. However, stretchable sound sources based on a thermal-acoustic mechanism remain elusive, as realizing stable resistance in a reasonable range is challenging. In this study, a stretchable thermal-acoustic device based on graphene ink is fabricated on a weft-knitted fabric. After optimization of the graphene ink concentration, the device resistance changes by 8.94% during 4000 cycles of operation in the unstretchable state. After multiple cycles of bending, folding, prodding, and washing, the sound pressure level (SPL) change of the device is within 10%. Moreover, the SPL has an increase with the strain in a specific range, showing a phenomenon similar to the negative differential resistance (NDR) effect. This study sheds light on the use of stretchable thermal-acoustic devices for e-skin and wearable electronics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Stretchable Ink Printed Graphene Device with Weft-Knitted Fabric Substrate Based on Thermal-Acoustic Effect

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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“…Reproduced under the terms of the CC-BY Creative Commons Attribution License, Copyright 2020 by the authors, published by Springer Nature. ( c ) Conductive fabrics doped with graphene [ 101 ]. Reproduced under the terms of the CC-BY Creative Commons Attribution License, Copyright 2022 American Chemical Society.…”

Section: Figurementioning

confidence: 99%

Recent Progress in Long-Term Sleep Monitoring Technology

Yin

Ren

2023

Biosensors

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Sleep is an essential physiological activity, accounting for about one-third of our lives, which significantly impacts our memory, mood, health, and children’s growth. Especially after the COVID-19 epidemic, sleep health issues have attracted more attention. In recent years, with the development of wearable electronic devices, there have been more and more studies, products, or solutions related to sleep monitoring. Many mature technologies, such as polysomnography, have been applied to clinical practice. However, it is urgent to develop wearable or non-contacting electronic devices suitable for household continuous sleep monitoring. This paper first introduces the basic knowledge of sleep and the significance of sleep monitoring. Then, according to the types of physiological signals monitored, this paper describes the research progress of bioelectrical signals, biomechanical signals, and biochemical signals used for sleep monitoring. However, it is not ideal to monitor the sleep quality for the whole night based on only one signal. Therefore, this paper reviews the research on multi-signal monitoring and introduces systematic sleep monitoring schemes. Finally, a conclusion and discussion of sleep monitoring are presented to propose potential future directions and prospects for sleep monitoring.

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“…Extensive materials involving carbon-based, 31-34 metal, [35][36][37][38] polymer, [39][40][41][42] textile, [43][44][45][46] and ionic materials [47][48][49][50] offer opportunities for building e-skins with tactile and noncontact sensing capabilities. Polymer materials, possessing the salient merits of lightweight, mechanical flexibility, good compatibility, and high plasticity, are widely employed as substrate material and functional layers of e-skins to enable high-performance in both tactile sensing and noncontact sensing aspects.…”

Section: Introductionmentioning

confidence: 99%

Advanced polymer materials‐based electronic skins for tactile and non‐contact sensing applications

Yin

Niu

Kim

et al. 2023

InfoMat

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Recently, polymer materials have been at the forefront of other materials in building high-performance flexible electronic skin (e-skin) devices due to conspicuous advantages including excellent mechanical flexibility, good compatibility, and high plasticity. However, most research works just paid considerable attention and effort to the design, construction, and possible application of e-skins that reproduce the tactile perception of the human skin sensory system.Compared with tactile sensing devices, e-skins that aim to imitate the noncontact sensing features in the sensory system of human skin tend to avoid undesired issues such as bacteria spreading and mechanical wear. To further promote the development of e-skins to the human skin sensory system where tactile perception and non-contact sensing complement each other, significant progress and advances have been achieved in the field of polymer materials enabled e-skins for both tactile perception and non-contact sensing applications.In this review, the latest progress in polymer material-based e-skins with regard to tactile, non-contact sensing capabilities and their practical applications are introduced. The fabrication strategies of polymer materials and their role in building high-performance e-skins for tactile and non-contact sensing are highlighted. Furthermore, we also review the research works that integrated the polymer-based tactile and non-contact e-skins into robots and prostheses, smart gloves, and VR/AR devices and addressed some representative problems to demonstrate their suitability in practical applications in human-machine interactions. Finally, the current challenges in the construction of high-performance tactile and non-contact e-skins are highlighted and promising properties in this direction, by taking advantage of the polymer materials, are outlined.

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Understanding the Origin of Tensile Response in a Graphene Textile Strain Sensor with Negative Differential Resistance

Cited by 26 publications

References 46 publications

Stretchable Ink Printed Graphene Device with Weft-Knitted Fabric Substrate Based on Thermal-Acoustic Effect

Stretchable Ink Printed Graphene Device with Weft-Knitted Fabric Substrate Based on Thermal-Acoustic Effect

Recent Progress in Long-Term Sleep Monitoring Technology

Advanced polymer materials‐based electronic skins for tactile and non‐contact sensing applications

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