Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

Qiang, Siyu; Carey, Tian; Arbab, Adrees; Song, Weihua; Wang, Chaoxia; Torrisi, Felice

doi:10.1039/c9nr00463g

Cited by 39 publications

(33 citation statements)

References 65 publications

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“…In the absence of the MOF layer, the charge storage contribution of the pristine textile fabric is negligible, resulting in extremely low baseline capacitance values (<1 fF), which is consistent with the previously reported textile-based wearable capacitors. 58 …”

Section: Resultsmentioning

confidence: 99%

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Rauf

Vijjapu

Andrés

et al. 2020

ACS Appl. Mater. Interfaces

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The increase in demand and popularity of smart textiles brings new and innovative ideas to develop a diverse range of textile-based devices for our daily life applications. Smart textile-based sensors (TEX sensors) become attractive due to the potential to replace current solid-state sensor devices with flexible and wearable devices. We have developed a smart textile sensor for humidity detection using a metal–organic framework (MOF) as an active thin-film layer. We show for the first time the use of the Langmuir–Blodgett (LB) technique for the deposition of a MIL-96(Al) MOF thin film directly onto the fabrics containing interdigitated textile electrodes for the fabrication of a highly selective humidity sensor. The humidity sensors were made from two different types of textiles, namely, linen and cotton, with the linen-based sensor giving the best response due to better coverage of MOF. The TEX sensor showed a reproducible response after multiple cycles of measurements. After 3 weeks of storage, the sensor showed a moderate decrease in response. Moreover, TEX sensors showed a high level of selectivity for the detection of water vapors in the presence of several volatile organic compounds (VOCs). Interestingly, the selectivity is superior to some of the previously reported MOF-coated solid-state interdigitated electrode devices and textile sensors. The method herein described is generic and can be extended to other textiles and coating materials for the detection of toxic gases and vapors.

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Section: Resultsmentioning

confidence: 99%

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Rauf

Vijjapu

Andrés

et al. 2020

ACS Appl. Mater. Interfaces

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“…Dip coating of polyester textiles in pristine graphene and h-BN inks (synthesized via LPE), enabled conducting (sheet resistance ≈ 2 kΩ sq -1 ) and dielectric textiles (relative permittivity ≈ 2.4), which could be used to construct solid-state capacitors based on 2D material all-textile heterostructures (Figure 5a-b). 95 The textile capacitor coupled to a graphene-polyester textile resistor demonstrated an all-textile radio-frequency (RF) low-pass filter operating at 15 kHz. 95 Similarly, a textile triboelectric nanogenerator (TENG) can be optimized to harvest mechanical energy from the involuntary motion of skin against fabric during everyday mobility.…”

Section: Graphene Related 2d Materials and Hybridsmentioning

confidence: 99%

Conducting materials as building blocks for electronic textiles

Lund

Fenech-Salerno

et al. 2021

MRS Bulletin

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To realize the full gamut of functions that are envisaged for electronic textiles (e-textiles) a range of semiconducting, conducting and electrochemically active materials are needed. This article will discuss how metals, conducting polymers, carbon nanotubes, and two-dimensional (2D) materials, including graphene and MXenes, can be used in concert to create e-textile materials, from fibers and yarns to patterned fabrics. Many of the most promising architectures utilize several classes of materials (e.g., elastic fibers composed of a conducting material and a stretchable polymer, or textile devices constructed with conducting polymers or 2D materials and metal electrodes). While an increasing number of materials and devices display a promising degree of wash and wear resistance, sustainability aspects of e-textiles will require greater attention. Graphical abstract

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“…So, the development of compact pressure sensors [21][22][23][24] that can be a part of clothing has become a big challenge today. Most of the pressure sensors have a multi-layer structure with a low conductive layer as a spacer inserted between two high conductive 2 of 10 layers in order to measure the levels of pressure [25][26][27]. For example, Atalay et al [28] proposed the sensitive capacitive pressure sensor based on conductive fabrics and a microporous-dielectric layer.…”

Section: Introductionmentioning

confidence: 99%

Single-Layer Pressure Textile Sensors with Woven Conductive Yarn Circuit

Kim

2020

Applied Sciences

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Today, e-textiles have become a fundamental trend in wearable devices. Fabric pressure sensors, as a part of e-textiles, have also received much interest from many researchers all over the world. However, most of the pressure sensors are made of electronic fibers and composed of many layers, including an intermediate layer for sensing the pressure. This paper proposes the model of a single layer pressure sensor with electrodes and conductive fibers intertwined. The plan dimensions of the fabricated sensors are 14 x 14 mm, and the thickness is 0.4 mm. The whole area of the sensor is the pressure-sensitive point. As expected, results demonstrate an electrical resistance change from 283 Ω at the unload pressure to 158 Ω at the load pressure. Besides, sensors have a fast response time (50 ms) and small hysteresis (5.5%). The hysteresis will increase according to the pressure and loading distance, but the change of sensor loading distance is very small. Moreover, the single-layer pressure sensors also show high durability under many working cycles (20,000 cycles) or washing times (50 times). The single-layer pressure sensor is very thin and more flexible than the multi-layer pressure sensor. The structure of this sensor is also expected to bring great benefits to wearable technology in the future.

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Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

Abstract: Two dimensional (2D) materials are a rapidly growing area of interest for wearable electronics, due to their flexible and unique electrical properties.

Cited by 39 publications

References 65 publications

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Highly Selective Metal–Organic Framework Textile Humidity Sensor

Conducting materials as building blocks for electronic textiles

Single-Layer Pressure Textile Sensors with Woven Conductive Yarn Circuit

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