Review—Wearable Graphene Devices for Sensing

Xie, Jian; Chen, Qiong; Shen, Hong; Li, Gaoran

doi:10.1149/1945-7111/ab67a4

Cited by 45 publications

(26 citation statements)

References 100 publications

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“…Therefore, different strategies are required for the monitoring and diagnosis of such diseases and an effective strategy in this regard is HWDs 2 . Wearable devices are defined as devices, which are worn on the human body or on clothing 3 . They consist of a target receptor and a transducer.…”

Section: Introductionmentioning

confidence: 99%

Advances in healthcare wearable devices

et al. 2021

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Wearable devices have found numerous applications in healthcare ranging from physiological diseases, such as cardiovascular diseases, hypertension and muscle disorders to neurocognitive disorders, such as Parkinson’s disease, Alzheimer’s disease and other psychological diseases. Different types of wearables are used for this purpose, for example, skin-based wearables including tattoo-based wearables, textile-based wearables, and biofluidic-based wearables. Recently, wearables have also shown encouraging improvements as a drug delivery system; therefore, enhancing its utility towards personalized healthcare. These wearables contain inherent challenges, which need to be addressed before their commercialization as a fully personalized healthcare system. This paper reviews different types of wearable devices currently being used in the healthcare field. It also highlights their efficacy in monitoring different diseases and applications of healthcare wearable devices (HWDs) for diagnostic and treatment purposes. Additionally, current challenges and limitations of these wearables in the field of healthcare along with their future perspectives are also reviewed.

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Section: Introductionmentioning

confidence: 99%

Advances in healthcare wearable devices

et al. 2021

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“…[ 18–22 ] Nonetheless, graphene has boomed in the last 17 years, used for applications in many different fields: as a filler to improve the structural properties of composite materials and coatings, while modifying their electrical, thermal, and anticorrosion properties; [ 23–26 ] as a substitute for metals as a conductor for electromagnetic interference shielding; [ 27–29 ] as a transparent conductor with added flexibility replacing conventional metal‐oxides; [ 30–32 ] enhancing energy gathering in solar cells; [ 33,34 ] as a standalone or catalyst enhancer, boosting storage in super capacitors and batteries; [ 35–38 ] as a membrane and filter for water purification and selective contaminant adsorption; [ 39–41 ] as a key component in drug delivery and theragnostics; [ 42,43 ] as a platform to study quantum phenomena and develop the knowledge of condensed matter physics (spintronics, superconductivity, topological insulators, photonics, plasmonics) [ 44–48 ] and as a transduction material, both as a sensor or actuator. [ 49–62 ] As a transducer, graphene has found applications in optoelectronic sensors and modulators, with enhanced properties in the IR and THz spectral regions and strong impact in the field of telecommunications, [ 63–66 ] in chemical and biochemical sensors with high sensitivity, either in liquids or gases, moving toward a point‐of‐care analysis paradigm, [ 67–71 ] and in mechanical transductors, as a sensor or actuator, exploring a variety of mechanisms where graphene can be used as the active material of the sensor or as an enhancer of the performance of other materials. [ 52,53,55–57,59,62,72,73 ]…”

Section: Introductionmentioning

confidence: 99%

A Review on the Applications of Graphene in Mechanical Transduction

et al. 2021

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A pressing need to develop low‐cost, environmentally friendly, and sensitive sensors has arisen with the advent of the always‐connected paradigm of the internet‐of‐things (IoT). In particular, mechanical sensors have been widely studied in recent years for applications ranging from health monitoring, through mechanical biosignals, to structure integrity analysis. On the other hand, innovative ways to implement mechanical actuation have also been the focus of intense research in an attempt to close the circle of human–machine interaction, and move toward applications in flexible electronics. Due to its potential scalability, disposability, and outstanding properties, graphene has been thoroughly studied in the field of mechanical transduction. The applications of graphene in mechanical transduction are reviewed here. An overview of sensor and actuator applications is provided, covering different transduction mechanisms such as piezoresistivity, capacitive sensing, optically interrogated displacement, piezoelectricity, triboelectricity, electrostatic actuation, chemomechanical and thermomechanical actuation, as well as thermoacoustic emission. A critical review of the main approaches is presented within the scope of a wider discussion on the future of this so‐called wonder material in the field of mechanical transduction.

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“…Graphene has also been more often used in wearable devices in recent years and has become one of the easiest materials to use in wearable sensing technology. For example, the use of CVD technology to grow graphene on PDMS substrate to make flexible electrodes for ECG devices, sensors for interactive human-machine interface (iHMI) systems, and motion detection or environmental monitoring devices have been prepared, which shows that performance of materials in wearable devices is constantly being improved in future use [40]. In the past few years, our research group has also successfully synthesized highly flexible and conductive nanohybrid electrode films.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Air-Stable Copper Nanoparticles on Graphene Oxide Flexible Hybrid Films for Smart Clothes

Huang

et al. 2022

Polymers

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Through the use of organic/inorganic hybrid dispersants—which are composed of polymeric dispersant and two-dimension nanomaterial graphene oxide (GO)—copper nanoparticles (CuNPs) were found to exhibit nano stability, air-stable characteristics, as well as long-term conductive stability. The polymeric dispersant consists of branched poly(oxyethylene)-segmented esters of trimellitic anhydride adduct (polyethylene glycol−trimethylolpropane−trimellitic anhydride, designated as PTT). PTT acts as a stabilizer for CuNPs, which are synthesized via in situ polymerization and redox reaction of the precursor Cu(CH3COO)2 within an aqueous system, and use graphene oxide to avoid the reduction reaction of CuNPs. The results show that after 30 days of storage the CuNPs/PTT/GO composite film maintains a highly conductive network (9.06 × 10−1 Ω/sq). These results indicate that organic/inorganic PTT/GO hybrid dispersants can effectively maintain the conductivity stability of CuNPs and address the problem of CuNP oxidation. Finally, the new CuNPs/PTT/GO composite film was applied to the electrocardiogram (ECG) smart clothes. This way, a stable and antioxidant-sensing electrode can be produced, which is expected to serve as a long-term ECG monitoring device.

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Review—Wearable Graphene Devices for Sensing

Cited by 45 publications

References 100 publications

Advances in healthcare wearable devices

Advances in healthcare wearable devices

A Review on the Applications of Graphene in Mechanical Transduction

Immobilization of Air-Stable Copper Nanoparticles on Graphene Oxide Flexible Hybrid Films for Smart Clothes

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