Research on highly sensitive humidity sensor based on Tr-MWCNT/HEC composite films

Wang, Dayue; Zhang, Shuai; Ma, Yangyang; Liu, Ping; Liu, Caixia; Zhang, Yugang

doi:10.1557/jmr.2014.328

Cited by 9 publications

(11 citation statements)

References 35 publications

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“…In addition to being a hygroscopic polymer, HEC is also an efficient dispersant in the ink system as it is completely water soluble and swells in the presence of water, thereby preventing agglomeration between the FMWCNTs. 11,46 The mixture was stirred for 16 hours to obtain homogeneity in the composite. Finally, PVPP was added and magnetically stirred for 3 hours to form the FMWCNT/HEC ink ( Fig.…”

Section: Fmwcnt/hec Ink Formulationmentioning

confidence: 99%

A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

et al. 2019

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Section: Fmwcnt/hec Ink Formulationmentioning

confidence: 99%

A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

et al. 2019

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“…However, such a humidity sensing property cannot be fully employed for two reasons: (1) poor water molecule adsorption due to the intrinsic hydrophobicity of CNTs and (2) the severe agglomeration caused by the strong van der Waals forces among CNTs in aqueous solutions. − Recently, many efforts have been taken to improve the sensitivity of CNT-based humidity sensors. (1) Introducing oxygen-containing groups on the surface of CNTs by modification treatment. , (2) Blending CNTs with hydrophilic polymers (such as polyimide, polyvinyl alcohol, and hydroxyethyl cellulose) to prepare CNT/polymer composite materials. ,− However, the improvement is still very limited for the sensors practical applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Highly Sensitive Humidity Sensor Based on Cellulose Nanofibers and Carbon Nanotube Composite Film

et al. 2019

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Flexible and highly sensitive humidity sensors are crucial for humidity detection. In this study, a flexible cellulose nanofiber/carbon nanotube (NFC/CNT) humidity sensor with high sensitivity performance was developed via fast vacuum filtration. CNTs were well dispersed in water by using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized NFC as a dispersant. More importantly, NFC also acted as a humidity sensitive material, achieving superior performance of NFC/CNT humidity sensors. The obtained NFC/CNT humidity sensor with 5 wt % CNT loading exhibits outstanding sensitive performance, and its response value reaches a maximum of 69.9% (ΔI/I 0) at 95% relative humidity (RH). It also displays good bending resistance and long-term stability. In addition, the NFC/CNT humidity sensor was employed to monitor human breath. Therefore, we believe that the flexible, highly sensitive, and simply designed NFC/CNT humidity sensor is a promising candidate for various applications in the field of humidity measurement.

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“…[1][2][3][4][5][6] A lot of research focuses on the electronic skin systems based on resistive, capacitive, and piezoelectric. [7][8][9] Recently, flexible composites with piezoresistive properties have been proved to be a good choice since these materials are able to reproduce the tactile sense and fit the shape of the robot structure, obtaining the high conformability required to mimic the human skin and being able to obtain metrical information with high precision and high resolution.…”

Section: Introductionmentioning

confidence: 99%

A multilayered flexible piezoresistive sensor for wide-ranged pressure measurement based on CNTs/CB/SR composite

et al. 2015

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To optimize the structure of the flexible piezoresistive sensor based on conductive polymer composite and widen the workable pressure range, a piezoresistive sensor with a multilayered structure based on carbon nanotubes/carbon black/silicone rubber conductive composite was designed and investigated. Different from the traditional monolayer structure, this novel multilayered sensor consisted of three microstructured piezoresistive composite films. The experimental data showed that the electrical resistance of the sensor varied regularly with a wide range of applied pressure (0-1.8 MPa at least). The high sensitivity, high flexibility, facile fabrication, and low cost were also the advantages of this pressure sensor. In addition, the piezoresistive mechanism was studied and shown to be the synergistic effects of the contact resistance mechanism and bulk resistance mechanism. Factors influencing the piezoresistive properties were also investigated. Moreover, the consecutive loading tests verified the feasibility and stability to use this sensor element for pressure measurement.

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Research on highly sensitive humidity sensor based on Tr-MWCNT/HEC composite films

Abstract: Abstract

Cited by 9 publications

References 35 publications

A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

Flexible and Highly Sensitive Humidity Sensor Based on Cellulose Nanofibers and Carbon Nanotube Composite Film

A multilayered flexible piezoresistive sensor for wide-ranged pressure measurement based on CNTs/CB/SR composite

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