Flexible electrochemical biosensors based on graphene nanowalls for the real-time measurement of lactate

Chen, Qianwei; Sun, Tai; Song, Xianlin; Ran, Qincui; Yu, Chongsheng; Yang, Jun; Feng, Hua; Yu, Linfeng; Wei, Dapeng

doi:10.1088/1361-6528/aa78bc

Cited by 46 publications

(27 citation statements)

References 33 publications

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“…And it's Young's modulus is ≈ 3.7 MPa [38], making the stretch and strain more than 200%. Given its excellent stretch, extensibility, thermoelectric properties [39][40][41], high chemical stability, and easy use make PDMS more abundant in applications such as electronic skin [42]. Polyimide (PI) material with properties similar to PDMS (shown in Table 1), PI exhibit a poor thermal conductivity in the order of 0.1 W m −1 K −1 [43][44][45], with electrical insulating resistivity 1.5 × 10 17 cm −1 [46].…”

Section: Flexible Substratesmentioning

confidence: 99%

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Chen

et al. 2020

Nanoscale Res Lett

171

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In recent years, the development and research of flexible sensors have gradually deepened, and the performance of wearable, flexible devices for monitoring body temperature has also improved. For the human body, body temperature changes reflect much information about human health, and abnormal body temperature changes usually indicate poor health. Although body temperature is independent of the environment, the body surface temperature is easily affected by the surrounding environment, bringing challenges to body temperature monitoring equipment. To achieve real-time and sensitive detection of various parts temperature of the human body, researchers have developed many different types of high-sensitivity flexible temperature sensors, perfecting the function of electronic skin, and also proposed many practical applications. This article reviews the current research status of highly sensitive patterned flexible temperature sensors used to monitor body temperature changes. First, commonly used substrates and active materials for flexible temperature sensors have been summarized. Second, patterned fabricating methods and processes of flexible temperature sensors are introduced. Then, flexible temperature sensing performance are comprehensively discussed, including temperature measurement range, sensitivity, response time, temperature resolution. Finally, the application of flexible temperature sensors based on highly delicate patterning are demonstrated, and the future challenges of flexible temperature sensors have prospected.

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Section: Flexible Substratesmentioning

confidence: 99%

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Chen

et al. 2020

Nanoscale Res Lett

171

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“…Formation of different oxygen-containing functional groups after oxygen plasma post-treatment enhances the capability of CNWs to interact with electrolyte rapidly, which further increases the specific capacitance of the material. Chen et al also reported the effect of oxygen plasma post-treatment in enhancing the reaction of CNWs with enzymes for electrochemical sensors to detect lactate enzyme [ 138 ]. Gokus et al and Wang et al explained the effect of oxygen plasma treatment on graphene to modify the photoluminescent (PL) properties [ 120 , 139 ].…”

Section: Plasma Assisted Surface Modification and Dopingmentioning

confidence: 99%

Oriented Carbon Nanostructures by Plasma Processing: Recent Advances and Future Challenges

et al. 2018

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Carbon, one of the most abundant materials, is very attractive for many applications because it exists in a variety of forms based on dimensions, such as zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), and-three dimensional (3D). Carbon nanowall (CNW) is a vertically-oriented 2D form of a graphene-like structure with open boundaries, sharp edges, nonstacking morphology, large interlayer spacing, and a huge surface area. Plasma-enhanced chemical vapor deposition (PECVD) is widely used for the large-scale synthesis and functionalization of carbon nanowalls (CNWs) with different types of plasma activation. Plasma-enhanced techniques open up possibilities to improve the structure and morphology of CNWs by controlling the plasma discharge parameters. Plasma-assisted surface treatment on CNWs improves their stability against structural degradation and surface chemistry with enhanced electrical and chemical properties. These advantages broaden the applications of CNWs in electrochemical energy storage devices, catalysis, and electronic devices and sensing devices to extremely thin black body coatings. However, the controlled growth of CNWs for specific applications remains a challenge. In these aspects, this review discusses the growth of CNWs using different plasma activation, the influence of various plasma-discharge parameters, and plasma-assisted surface treatment techniques for tailoring the properties of CNWs. The challenges and possibilities of CNW-related research are also discussed.

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“…Chen et al reported the implementation of PECVD grown graphene nano walls (GNWs) in the fabrication of flexible electromechanical biosensor for real-time measurement of lactate [244]. In the method, crosslinking was adopted to functionalize the obtained GNWs with chitosanglutaraldehyde to immobilize lactate enzyme on GNWs using PET as the flexible substrate.…”

Section: Biosensors and Flexible Wearable Devicesmentioning

confidence: 99%

Chemical Vapour Deposition of Graphene—Synthesis, Characterisation, and Applications: A Review

et al. 2020

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Graphene as the 2D material with extraordinary properties has attracted the interest of research communities to master the synthesis of this remarkable material at a large scale without sacrificing the quality. Although Top-Down and Bottom-Up approaches produce graphene of different quality, chemical vapour deposition (CVD) stands as the most promising technique. This review details the leading CVD methods for graphene growth, including hot-wall, cold-wall and plasma-enhanced CVD. The role of process conditions and growth substrates on the nucleation and growth of graphene film are thoroughly discussed. The essential characterisation techniques in the study of CVD-grown graphene are reported, highlighting the characteristics of a sample which can be extracted from those techniques. This review also offers a brief overview of the applications to which CVD-grown graphene is well-suited, drawing particular attention to its potential in the sectors of energy and electronic devices.

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Flexible electrochemical biosensors based on graphene nanowalls for the real-time measurement of lactate

Cited by 46 publications

References 33 publications

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

Oriented Carbon Nanostructures by Plasma Processing: Recent Advances and Future Challenges

Chemical Vapour Deposition of Graphene—Synthesis, Characterisation, and Applications: A Review

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