Residual Compressive Stress Enabled 2D-to-3D Junction Transformation in Amorphous Carbon Films for Stretchable Strain Sensors

Ma, Xin; Guo, Peng; Tong, Xiaoshan; Zhao, Yulong; Wang, Aiying

doi:10.1021/acsami.0c12073

Cited by 15 publications

(6 citation statements)

References 34 publications

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“…Furthermore, this sensor could transmit the sensing data of volunteers in real time through a big data cloud platform at a distance of 62 km. In 2020, Wang et al [121] described a 2D-to-3D electrical junction transformation strategy for fabricating sensitive stretchable strain sensors based on the release of high residual compressive stress and the large difference in Young's modulus of the a-C/hardened PDMS/PDMS multilayer system. Using this strategy to achieve cracks, wrinkles, and 3D junctions, they increased the sensitivity to a GF of 746.7, the strain sensor range up to 0.5, and repeatability over 5000 cycles.…”

Section: Strain Sensorsmentioning

confidence: 99%

Surface Wrinkling for Flexible and Stretchable Sensors

Lee

Zarei

Wei

et al. 2022

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Figure 11. Other fabricating methods to develop flexible or stretchable sensors. a) Left: Fabrication of a flexible sensor by thermal oxidation of copper foil to produce the wrinkled morphology. Right:As-prepared sensing layer with wrinkled structures on the surface and its pressure sensing performance (Reproduced with permission. [10] Copyright 2016, Wiley-VCH). b) Top: Wrinkling mechanism by evaporation of water droplets. Bottom: Atomic force microscopy images of the monolayer graphene with wrinkled geometry (Reproduced with permission. [87] Copyright 2020, Nature Publishing Group). c) Left: Schematic diagram of the wrinkling phenomenon by electrospinning. Right: Scanning electron microscopy (SEM) images of the wrinkled surfaces (Reproduced with permission. [88] Copyright 2020, Elsevier). d) Left: Preparation steps and schematic representation of hierarchical wrinkled conductors. Right: SEM images and illustrations of hierarchical wrinkles (Reproduced with permission. [89] Copyright 2016, Wiley-VCH).

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Section: Strain Sensorsmentioning

confidence: 99%

Surface Wrinkling for Flexible and Stretchable Sensors

Lee

Zarei

Wei

et al. 2022

Small

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“…This section proposes potential practical applications of the a-C thin films on the basis of corresponding recent achievements. The applications in which the a-C thin films can function by themselves such as hardmask, [102][103][104][105] EUV pellicle, [106] and diffusion barrier [38,66,107,108] are discussed first, and the applications as a system of the device are followed, including deformable electrodes and interconnections, [14,15,109] sensors, [110][111][112][113][114][115][116][117][118][119][120][121][122][123] active channel layers, [124] electrodes for energy devices, [125,126] micro-supercapacitors, [125,127,128] batteries, [43,129] nanogenerators, [44,126] EMI shielding, [41] and nanomembranes. [128][129][130]…”

Section: Potential Industrial Applicationsmentioning

confidence: 99%

Amorphous Carbon Films for Electronic Applications

et al. 2022

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While various crystalline carbon allotropes, including graphene, have been actively investigated, amorphous carbon (a‐C) thin films have received relatively little attention. The a‐C is a disordered form of carbon bonding with a broad range of the CC bond length and bond angle. Although accurate structural analysis and theoretical approaches are still insufficient, reproducible structure–property relationships have been accumulated. As the a‐C thin film is now adapted as a hardmask in the semiconductor industry and new properties are reported continuously, expectations are growing that it can be practically used as active materials beyond as a simple sacrificial layer. In this perspective review article, after a brief introduction to the synthesis and properties of the a‐C thin films, their potential practical applications are proposed, including hardmasks, extreme ultraviolet (EUV) pellicles, diffusion barriers, deformable electrodes and interconnects, sensors, active layers, electrodes for energy, micro‐supercapacitors, batteries, nanogenerators, electromagnetic interference (EMI) shielding, and nanomembranes. The article ends with a discussion on the technological challenges in a‐C thin films.

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“…Results showed that, for the first time, the a-C film ranging from 25 nm to 1 µm changed the shape and orientation of conductive scales, and especially, the sensor with a 1 µm thick a-C film provided a maximum gauge factor of 746.7 and strain range up to 0.5. [131] a-C and its carbon-containing variant, i.e., tetrahedral amorphous carbon (ta-C), have also garnered significant attention for their uses as electrodes [132,133] owing to their large water window [134] and low background signal. [135] According to the literature, carbon thin film electrodes have been used for the selective determination of dopamine concentrations [135] as sensors, and moreover, a-C thin films with intrinsic platinum gradients have been employed as electrodes for electrochemical detection of hydrogen peroxide.…”

Section: Conductive Materialsmentioning

confidence: 99%

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

Erdem

Derin

Shirejini

et al. 2021

Adv Materials Technologies

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In this manner, sensor technologies have garnered great attention in various fields, including biomedicine, [2][3][4][5] environmental monitoring, [6][7][8][9] smart devices, [10] wearable devices, [11] automobile manufacturing [12] since the semiconductor materials and circuits have been developed. In particular, biosensors are powerful and innovative analytical tools that incorporate biological receptors to recognize biological analytes through either physical or chemical transducers. Primarily, bio-receptors are responsible for identifying and capturing target analytes, and the transducer basically translates biological and chemical information into the detectable signals, which are eventually converted into the concentration of the analyte. [13,14] Considering gold standard methods, such as enzyme-linked immunosorbent assay (ELISA) [15] and polymerase chain reaction (PCR)-based strategies, [16] biosensors mostly hold crucial features, such as i) short assay time, [17] ii) affordable tools and reagents, [18] iii) portability, [19] and iv) facile use and minimum user interpretation. [20] Nowadays, the applications of biosensors have been leveraged by the advancements of portable and miniaturized platforms. In particular, over the past years, wearable health monitoring devices have notable impact on continuous and real-time monitoring of health parameters, thereby accelerating the deployment of biosensing strategies to daily lives. Besides, non-invasive and ease-of-collecting information supports the benefits of the wearable systems for enhancing the awareness of individuals and communities. [21][22][23] The special features of the mechanically flexible and stable wearable sensors include remarkable means, such as portability, comfortability, light-weight, non-invasive, and reliable performance. To put it simply, wearable sensors are readily attached to skin or organ surfaces through an adhesive tape [24] or microneedles, [25] and because of such easy integrations, several researchers have focused on developing wearable sensors for real-time health monitoring. A wearable sensor is basically composed of some vital elements, including a flexible base material attached to the skin or an organ, a signal transfer electrode, and a biorecognition element. Recently, researchers have concentrated on creating integrated sensors that are able to measure various parameters simultaneously, such as pressure, temperature,The healthcare system has a drastic paradigm shift from centralized care to home-based and self-monitoring strategies; aiming to reach more individuals, minimize workload in hospitals, and reduce healthcare-associated expenses. Particularly, wearable technologies are garnering considerable interest by tracking physiological parameters through motion and activities, and monitoring biochemical markers from sweat, saliva, and tears. Through their integrations with sensors, microfluidics, and wireless communication systems, they allow physicians, family members, or individuals to monitor multiple parameters withou...

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Residual Compressive Stress Enabled 2D-to-3D Junction Transformation in Amorphous Carbon Films for Stretchable Strain Sensors

Cited by 15 publications

References 34 publications

Surface Wrinkling for Flexible and Stretchable Sensors

Surface Wrinkling for Flexible and Stretchable Sensors

Amorphous Carbon Films for Electronic Applications

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

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