Mechanisms of humidity sensing on a CdS nanoparticle coated paper sensor

Bhattacharjee, Mitradip; Bandyopadhyay, Dipankar

doi:10.1016/j.sna.2018.11.034

Cited by 39 publications

(23 citation statements)

References 34 publications

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“…Paper-based (PB) strain sensors are usually fabricated by simply dip-coating the paper into electrically conductive filler suspensions. ,− In general, carbonaceous fillers [e.g., zero-dimensional carbon black (CB), one-dimensional carbon nanotube (CNT), and two-dimensional graphene], ,− metallic fillers, , and hybrid fillers − are ideal electrically conductive fillers. To lower the manufacturing cost, low-cost CB is usually adopted.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Electrically Conductive Paper for Ultrasensitive Strain Sensor with Excellent Anticorrosion and Self-Cleaning Property

Liu

Zhang

et al. 2019

ACS Appl. Mater. Interfaces

248

134

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Recently, a paper-based (PB) strain sensor has turned out to be an ideal substitute for the polymer-based one because of the merits of renewability, biodegradability, and low cost. However, the hygroexpansion and degradation of the paper after absorbing water are the great challenges for the practical applications of the PB strain sensor. Herein, the superhydrophobic electrically conductive paper was fabricated by simply dip-coating the printing paper into the carbon black (CB)/carbon nanotube (CNT)/methyl cellulose suspension and hydrophobic fumed silica (Hf-SiO 2 ) suspension successively to settle the problem. Because of the existence of ultrasensitive microcrack structures in the electrically conductive CB/CNT layer, the sensor was capable of detecting an ultralow strain as low as 0.1%. During the tension strain range of 0−0.7%, the sensor exhibited a gauge factor of 7.5, almost 3 times higher than that of the conventional metallic-based sensors. In addition, the sensor displayed frequencyindependent and excellent durability and reproductivity over 1000 tension cycles. Meanwhile, the superhydrophobic Hf-SiO 2 layer with a micro−nano structure and low surface energy endowed the sensor with outstanding waterproof and self-cleaning properties, as well as great sustainability toward cyclic strain and harsh corrosive environment. Finally, the PB strain sensor could effectively monitor human bodily motions such as finger/elbow joint/throat movement and pulse in real time, especially for the wet or rainy conditions. All these pave way for the fabrication of a high-performance PB strain sensor.

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Section: Introductionmentioning

confidence: 99%

Superhydrophobic Electrically Conductive Paper for Ultrasensitive Strain Sensor with Excellent Anticorrosion and Self-Cleaning Property

Liu

Zhang

et al. 2019

ACS Appl. Mater. Interfaces

248

134

View full text Add to dashboard Cite

show abstract

“…Thus, the overall capacitance of the sensor changes in response to humidity changes (Figure b). Humidity sensors can also be formed on paper by creating sensing electrodes using pencils in conjunction with a layer of oxidized multiwalled carbon nanotubes ink, or by drop casting CdS nanoparticles . These sensors have shown to exhibit good reproducibility and stability during dynamic measurements.…”

Section: Paper As An Active Materialsmentioning

confidence: 99%

Paper as a Substrate and an Active Material in Paper Electronics

Khan

Nassar

Hussain

2020

ACS Appl. Electron. Mater.

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Paper is an essential part of our daily life in many different ways. It is made by compressing cellulose fibers sourced from wood into thin sheets. Paper is an inherently flexible material which can transport liquids through its medium by capillary action without the need of external force. The mesh network of cellulose in paper gives it a unique set of mechanical properties. Owing to its exclusive and advantageous properties, paper is being used as an active material and a substrate in electronics. Paper as an active material means that paper is utilized in its intrinsic form without modifications. Activated (or functionalized) paper has been widely exploited in many applications, but in order to take true advantage of all the beneficial properties of paper, it needs to be used in its natural produced form. Notably, paper is employed in humidity sensors, pressure sensors, and MEMS devices in its natural form. Additionally, paper is used as a substrate in additively manufactured and origami-inspired electronic devices. Here, we present an overview of how paper is used to make fully flexible and low-cost devices. Furthermore, the emergence of paper-based point-of-care devices is briefly discussed.

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“…This results in a good flexibility and high performance because the advantages of printing technology and surface mounting technology are converged. Many reported hybrid printed electronics have soldered or bonded circuit components on printed flexible polymer or paper substrates [77][78][79][80][81][82][83][84]. In this paper, two design examples of hybrid printed electronics are introduced.…”

Section: Hybrid Printed Electronicsmentioning

confidence: 99%

Inkjet-Printed Electronics on Paper for RF Identification (RFID) and Sensing

Kim

2020

Electronics

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The newly developed research area of inkjet-printed radio frequency (RF) electronics on cellulose-based and synthetic paper substrates is introduced in this paper. This review paper presents the electrical properties of the paper substrates, the printed silver nanoparticle-based thin films, the dielectric layers, and the catalyst-based metallization process. Numerous inkjet-printed microwave passive/ative systems on paper, such as a printed radio frequency identification (RFID) tag, an RFID-enabled sensor utilizing carbon nanotubes (CNTs), a substrate-integrated waveguide (SIW), fully printed vias, an autonomous solar-powered beacon oscillator (active antenna), and artificial magnetic conductors (AMC), are discussed. The reported technology could potentially act as the foundation for true “green” low-cost scalable wireless topologies for autonomous Internet-of-Things (IoT), bio-monitoring, and “smart skin” applications.

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Mechanisms of humidity sensing on a CdS nanoparticle coated paper sensor

Cited by 39 publications

References 34 publications

Superhydrophobic Electrically Conductive Paper for Ultrasensitive Strain Sensor with Excellent Anticorrosion and Self-Cleaning Property

Superhydrophobic Electrically Conductive Paper for Ultrasensitive Strain Sensor with Excellent Anticorrosion and Self-Cleaning Property

Paper as a Substrate and an Active Material in Paper Electronics

Inkjet-Printed Electronics on Paper for RF Identification (RFID) and Sensing

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