A comparative study of capacitive humidity sensor based on keratin film, keratin/graphene oxide, and keratin/carbon fibers

Hammouche, H.; Achour, H.; Makhlouf, Saïd; Chaouchi, Ahcène; Laghrouche, Mourad

doi:10.1016/j.sna.2021.112805

Cited by 43 publications

(20 citation statements)

References 46 publications

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“…The Ker/GO nanocomposite was prepared via physical adsorption . Typically, 0.3 g of keratin powder was dissolved in 0.3 mol/L Na 2 CO 3 /NaHCO 3 buffer solution (pH 9.5, 10 mL) containing 0.03 g of sodium dodecyl sulfonate (SDS).…”

Section: Methodsmentioning

confidence: 99%

“…The Ker/ GO nanocomposite was prepared via physical adsorption. 27 Typically, 0.3 g of keratin powder was dissolved in 0.3 mol/L Na 2 CO 3 / NaHCO 3 buffer solution (pH 9.5, 10 mL) containing 0.03 g of sodium dodecyl sulfonate (SDS). Subsequently, 0.05 g of GO powder was added to the keratin solution and dispersed under sonication for 1 h, followed by magnetic stirring overnight at room temperature.…”

Section: Methodsmentioning

confidence: 99%

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High-Performance Wigs via the Langmuir–Blodgett Deposition of Keratin/Graphene Oxide Nanocomposite

Nie

et al. 2022

ACS Appl. Mater. Interfaces

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Wigs provide a common service as hair accessories in people’s daily life. However, the traditional wigs, regardless of the matrices derived from human hair or synthetic fibers, are faced with limitations such as short service life, dry and brittle texture, and static electricity. In this work, we described a new strategy for surface coating of wigs via the Langmuir–Blodgett (LB) technique using a nanocomposite composed of hair-derived keratin and graphene oxide (Ker/GO). In contrast to the conventionally used immersion method, this strategy achieved a significantly higher surface coverage with a close-packed structure and controlled deposition layers of the coating, thus delivering high performances, including greatly enhanced ultraviolet (UV) resistance, antistatic electricity, heat dissipation, hydroscopicity, and moisturizing ability, and durability against washing, for both the human hair and synthetic-fiber-based wigs.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

High-Performance Wigs via the Langmuir–Blodgett Deposition of Keratin/Graphene Oxide Nanocomposite

Nie

et al. 2022

ACS Appl. Mater. Interfaces

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Section: Introductionmentioning

confidence: 99%

“…As the indispensable of wearable electronic devices, flexible humidity sensors have received considerable attention due to their potential value in personal healthcare [ 1–5 ] and noncontact sensing. [ 6,7 ] Thus far, flexible humidity sensors are generally categorized into capacitive, [ 8,9 ] resistive, [ 10,11 ] QCM, [ 12 ] SAW, [ 13 ] and optical fiber type.…”

Section: Introductionmentioning

confidence: 99%

High‐performance flexible humidity sensors for breath detection and non‐touch switches

et al. 2022

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Flexible humidity sensors have attracted much attention due to the promising applications in medical health monitoring. Up to now, the realization of such devices with ultrafast response/recovery and wide humidity range still remains a challenge. In this work, we report a new type of humidity sensor based on laser-induced graphene (LIG) and graphene oxide (GO) with excellent performances. Graphene interdigital electrodes with good conductivity were prepared by the laser-induced method. Then, the GO dispersion was drop-coated on the interdigital electrode and heated to form a film as a sensing material. We have systematically studied the performances of the humidity sensor under different humidity levels. The experiment results reveal that the humidity sensor possesses high response, fast response/recovery behavior with 2 and 35 seconds, and wide humidity range from 11% RH to 97% RH. This proposed high-performance humidity sensors could be applied in practical applications such as human breath monitoring under different states including slow breath, normal breath, fast breath, cough and rhinitis. In addition, the humidity sensors could also be used to monitor the approaching of fingertips, which makes the sensors be ideal non-contact buttons of the elevator for stopping contacting spread of COVID-19 viruses.

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“…Owing to different environments and requirements, a wide variety of humidity-sensing technologies (e.g., humidity sensors or hygrometers) have been researched and developed in the literature, including optical/photonic/optoelectronic [ 1 , 2 , 3 ], quartz crystal microbalance (QCM) [ 4 , 5 ], capacitive [ 6 ] and resistive [ 7 ]. Apart from the known advantages of immunity to electromagnetic interference (EMI) and electrical inertness, optical-based humidity sensors are typically more sensitive and offer a broader range of capabilities tailored for different applications (e.g., colorimetric, point, distributed) [ 8 ] compared to their traditional counterparts.…”

Section: Introductionmentioning

confidence: 99%

Review of Optical Humidity Sensors

Rao

Zhao

et al. 2021

Sensors

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Optical humidity sensors have evolved through decades of research and development, constantly adapting to new demands and challenges. The continuous growth is supported by the emergence of a variety of optical fibers and functional materials, in addition to the adaptation of different sensing mechanisms and optical techniques. This review attempts to cover the majority of optical humidity sensors reported to date, highlight trends in design and performance, and discuss the challenges of different applications.

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A comparative study of capacitive humidity sensor based on keratin film, keratin/graphene oxide, and keratin/carbon fibers

Cited by 43 publications

References 46 publications

High-Performance Wigs via the Langmuir–Blodgett Deposition of Keratin/Graphene Oxide Nanocomposite

High-Performance Wigs via the Langmuir–Blodgett Deposition of Keratin/Graphene Oxide Nanocomposite

High‐performance flexible humidity sensors for breath detection and non‐touch switches

Review of Optical Humidity Sensors

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