Biocompatible humidity sensor using paper cellulose fiber/GO matrix for human health and environment monitoring

Khan, Muhammad Umair; Abbas, Yawar; Abunahla, Heba; Rezeq, Moh’d; Alazzam, Anas; Alamoodi, Nahla; Mohammad, Baker

doi:10.1016/j.snb.2023.134188

Cited by 21 publications

(3 citation statements)

References 53 publications

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“…In a separate study, Mathur et al fabricated CuMoO 4 nanorods to create an acetone chemiresistor, thereby enabling noninvasive breath-based diabetes diagnosis and environmental monitoring (depicted in Figure 13b). Khan et al [245] utilized a cellulose fiber and graphene oxide matrix to develop humidity sensors suitable for both environmental humidity monitoring and human respiration detection, as demonstrated in Figure 13c.…”

Section: Environmental Monitoringmentioning

confidence: 99%

Organic Electronics in Biosensing: A Promising Frontier for Medical and Environmental Applications

Kaushal,

Raut,

Kumar

2023

Biosensors

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The promising field of organic electronics has ushered in a new era of biosensing technology, thus offering a promising frontier for applications in both medical diagnostics and environmental monitoring. This review paper provides a comprehensive overview of organic electronics’ remarkable progress and potential in biosensing applications. It explores the multifaceted aspects of organic materials and devices, thereby highlighting their unique advantages, such as flexibility, biocompatibility, and low-cost fabrication. The paper delves into the diverse range of biosensors enabled by organic electronics, including electrochemical, optical, piezoelectric, and thermal sensors, thus showcasing their versatility in detecting biomolecules, pathogens, and environmental pollutants. Furthermore, integrating organic biosensors into wearable devices and the Internet of Things (IoT) ecosystem is discussed, wherein they offer real-time, remote, and personalized monitoring solutions. The review also addresses the current challenges and future prospects of organic biosensing, thus emphasizing the potential for breakthroughs in personalized medicine, environmental sustainability, and the advancement of human health and well-being.

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Section: Environmental Monitoringmentioning

confidence: 99%

Organic Electronics in Biosensing: A Promising Frontier for Medical and Environmental Applications

Kaushal,

Raut,

Kumar

2023

Biosensors

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“…These properties render them highly useful in wearable devices and healthcare monitoring applications. Additionally, cellulose fibers exhibit good moisture absorption capabilities, which enable their use in humidity sensors for monitoring environmental or bodily humidity changes (Jiang & Zhou, 2021;Khan et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Skin-friendly, high pressure elasticity, high sensitivity PV/rGO/VF composite flexible sponge for intelligent physiological monitoring

Mao,

Hong,

Zhou

et al. 2024

Preprint

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3D graphene-based flexible nanosponges have shown great application potential in areas such as human motion tracking, health monitoring, and electronic skin. However, previously reported graphene-based flexible sensors typically focus on simple pressure sensing, lacking the capability to simultaneously detect both pressure and physiological signals. This limitation restricts their application in the field of intelligent wearable technology. In this study, a pressure-flexible composite sponge sensor was prepared using polyvinylidene fluoride (PVDF), viscose nonwoven fabric, and graphene oxide (GO) in a simple and cost-effective manner. Results showed that high-pressure electrospun PVDF inhibited the α-crystalline phase while promoting the transformation of diffraction peaks into the β-crystalline phase. Furthermore, high-temperature oxidation–reduction improved the crystallinity of β-phase crystals, enhancing the conductivity of PVDF/reduced GO/viscose fiber/polydimethylsiloxane ( PV/rGO/VF/P )sponges. With the increase of GO mass ratio, the thermal stability of the flexible composite device improved while weight loss decreased and resistance sensitivity increased. When compressed to 40%, the piezoelectric effect is most sensitive, and the composite sponge can fully recover under 60% compression. The addition of viscose fiber with a high swelling effect enables the composite sponge to precisely and sensitively detect the amount of sweat or glucose. This three-dimensional nanosponge can be applied in the design of ergonomic, physiologically monitoring smart wearable devices.

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“…Most humidity sensors are composed of humidity-sensitive materials and electrodes. A variety of humidity-sensitive materials have been developed, including metal oxides (e.g., titanium dioxide [ 19 ] tricobalt tetroxide [ 20 ]), ceramics (e.g., halloysite nanotubes [ 21 ], attapulgite [ 22 ], sepiolite nanofibers [ 23 ]), cellulose paper [ 24 ], polymers [ 25 ], MXene [ 26 ] and carbon materials [ 27 ] (e.g., graphene [ 28 ], graphene oxide (GO) [ 29 ], and carbon nanotubes [ 30 ]), among which graphene oxide is of interest for its excellent humidity sensing capability. Graphene oxide is a two-dimensional graphene derivative with a high specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Humidity Sensor Composed of Laser-Induced Graphene Electrode and Graphene Oxide for Monitoring Respiration and Skin Moisture

Fei,

Huang,

Shi

2023

Sensors

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Respiratory rate and skin humidity are important physiological signals and have become an important basis for disease diagnosis, and they can be monitored by humidity sensors. However, it is difficult to employ high-quality humidity sensors on a broad scale due to their high cost and complex fabrication. Here, we propose a reliable, convenient, and efficient method to mass-produce humidity sensors. A capacitive humidity sensor is obtained by ablating a polyimide (PI) film with a picosecond laser to produce an interdigital electrode (IDE), followed by drop-casting graphene oxide (GO) as a moisture-sensitive material on the electrode. The sensor has long-time stability, a wide relative humidity (RH) detection range from 10% to 90%, and high sensitivity (3862 pF/%RH). In comparison to previous methods, the technology avoids the complex procedures and expensive costs of conventional interdigital electrode preparation. Furthermore, we discuss the effects of the electrode gap size and the amount of graphene oxide on humidity sensor performance, analyze the humidity sensing mechanism by impedance spectrum, and finally perform the monitoring of human respiratory rate and skin humidity change in a non-contact manner.

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Biocompatible humidity sensor using paper cellulose fiber/GO matrix for human health and environment monitoring

Cited by 21 publications

References 53 publications

Organic Electronics in Biosensing: A Promising Frontier for Medical and Environmental Applications

Organic Electronics in Biosensing: A Promising Frontier for Medical and Environmental Applications

Skin-friendly, high pressure elasticity, high sensitivity PV/rGO/VF composite flexible sponge for intelligent physiological monitoring

Humidity Sensor Composed of Laser-Induced Graphene Electrode and Graphene Oxide for Monitoring Respiration and Skin Moisture

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