Carbon nanotubes on paper: Flexible and disposable chemiresistors

Shobin, Loukkose Rosemary; Manivannan, S.

doi:10.1016/j.snb.2015.06.030

Cited by 37 publications

(15 citation statements)

References 30 publications

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“…The facile fabrication method and mature commercial materials endow the paper-based humidity sensor with good consistency. Moreover, to avoid the e-waste and dissemination of bacteria after use by patients, the degradable characteristic of the sensors is significant . To illustrate this, the as-fabricated paper-based humidity sensor was directly disposed by a simple and cost-saving combustion method and the results show that the sensor can be burnt out within about 3 s and produces little ash, indicating its easy disposal (Figure S12).…”

Section: Resultsmentioning

confidence: 99%

Facile, Flexible, Cost-Saving, and Environment-Friendly Paper-Based Humidity Sensor for Multifunctional Applications

Duan

Jiang

Yan

et al. 2019

ACS Appl. Mater. Interfaces

384

276

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Developing a facile, cost-saving, and environment-friendly method for fabricating a multifunctional humidity sensor is of great significance to expand its practical applications. However, most humidity sensors involve a complex fabrication process, resulting in their high cost and narrow application fields. Herein, a multifunctional paper-based humidity sensor with many advantages is proposed. This humidity sensor is fabricated using conventional printing paper and flexible conductive adhesive tape by a facile pasting method, in which the paper is used as both the humidity-sensing material and the substrate of the sensor. Owing to the moderate hydrophilicity of the paper and the rational structure design of the paper-based humidity sensor, the sensor exhibits an excellent humidity-sensing response of more than 103 as well as good linearity (R 2 = 0.9549) within the humidity range from 41.1 to 91.5% relative humidity. Furthermore, the paper-based humidity sensor has good flexibility and compatibility, endowing it with multifunctional applications for breath rate, baby diaper wetting, noncontact switch, skin humidity, and spatial localization monitoring. Although the resistance of the paper-based humidity sensor is relatively large, the humidity-sensing response signals of the sensor can be conveniently processed by the designed signal processing system. The readily available starting materials and facile fabrication technique provide useful strategies for the development of multifunctional humidity sensors.

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Section: Resultsmentioning

confidence: 99%

Facile, Flexible, Cost-Saving, and Environment-Friendly Paper-Based Humidity Sensor for Multifunctional Applications

Duan

Jiang

Yan

et al. 2019

ACS Appl. Mater. Interfaces

384

276

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“…Recent advances in printed electronics technology and the market for wearable electronics have created opportunities for flexible UV sensors. One dimensional (1D) nanostructures or two-dimensional (2D) network of 1D nanostructures such as ZnO, ZnS, silicon, and others have been studied for sensitive, rigid, as well as flexible UV sensors. − Single walled carbon nanotube (SWCNT) film has served as an active material in printable electronics due to its high conductivity, cost-effective fabrication, and amenability to inkjet printing technology. , The SWCNT based inks have been applied on various substrates such as cellulose paper and cotton fiber to create gas and vapor sensors, − wherein gas adsorption changes the resistance or capacitance of the SWCNTs providing the basis for gas sensing through monitoring one of these physical properties. Given the demonstrated versatility of carbon nanotubes in a wide variety of applications and increased availability of CNT inks, it would be of interest to explore radiation sensors using SWCNTs as active sensing medium.…”

mentioning

confidence: 99%

Single Walled Carbon Nanotube Based Air Pocket Encapsulated Ultraviolet Sensor

2017

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Carbon nanotube (CNT) is a promising candidate as a sensor material for the sensitive detection of gases/vapors, biomarkers, and even some radiation, as all these external variables affect the resistance and other properties of nanotubes, which forms the basis for sensing. Ultraviolet (UV) radiation does not impact the nanotube properties given the substantial mismatch of bandgaps and therefore, CNTs have never been considered for UV sensing, unlike the popular ZnO and other oxide nanwires. It is well-known that UV assists the adsorption/desorption characteristics of oxygen on carbon nanotubes, which changes the nanotube resistance. Here, we demonstrate a novel sensor structure encapsulated with an air pocket, where the confined air is responsible for the UV sensing mechanism and assures sensor stability and repeatability over time. In addition to the protection from any contamination, the air pocket encapsulated sensor offers negligible baseline drift and fast recovery compared to previously reported sensors. The air pocket isolated from the outside environment can act as a stationary oxygen reservoir, resulting in consistent sensor characteristics. Furthermore, this sensor can be used even in liquid environments.

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“…In 2015, Shobin et al fabricated a PB NH 3 sensor by vacuum filtration and studied the characteristics of bending and fatigue, in which the SWCNTs were still used as NH 3 sensing materials. 50 Although the sheet resistance of the sensor increased with respect to the increase of bending angles, the NH 3 sensing response of the sensor remained almost unchanged and showed good mechanical bending stability. In addition, it has an easy processing property that can be burnt in a short time.…”

Section: Introductionmentioning

confidence: 96%

Paper-Based Sensors for Gas, Humidity, and Strain Detections: A Review

Tai

Duan

Wang

et al. 2020

ACS Appl. Mater. Interfaces

353

184

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Paper, as a flexible, low-cost, lightweight, tailorable, environmental-friendly, degradable, and renewable material, is emerging in electronic devices. Especially, many kinds of paper-based (PB) sensors have been reported for wearable applications in recent years. Among them, the PB gas, humidity, and strain sensors are widely studied for monitoring gas, humidity, and strain from the human body and the environment. However, gas, humidity, and strain often coexist and interact, and the paper itself is hydrophilic and flexible, resulting in that it is still challenging to develop high-performance PB sensors specialized for gas, humidity, and strain detections. Therefore, it is necessary to summarize and discuss them systematically. In this review, we focus on summarizing the state-of-art studies of the PB gas, humidity, and strain sensors. Specifically, the fabrications (electrodes and sensing materials) and applications of PB gas, humidity, and strain sensors are summarized and discussed. The current challenges and the potential trends of PB sensors for gas, humidity, and strain detections are also outlined. This review not only can help readers to understand the development status of the PB gas, humidity, and strain sensors but also is helpful for readers to find out and solve the problems in this field through comparative reading.

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Carbon nanotubes on paper: Flexible and disposable chemiresistors

Cited by 37 publications

References 30 publications

Facile, Flexible, Cost-Saving, and Environment-Friendly Paper-Based Humidity Sensor for Multifunctional Applications

Facile, Flexible, Cost-Saving, and Environment-Friendly Paper-Based Humidity Sensor for Multifunctional Applications

Single Walled Carbon Nanotube Based Air Pocket Encapsulated Ultraviolet Sensor

Paper-Based Sensors for Gas, Humidity, and Strain Detections: A Review

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