Highly conductive 1D-2D composite film for skin-mountable strain sensor and stretchable triboelectric nanogenerator

Lan, Lingyi; Yin, Tenghao; Jiang, Chengmei; Li, Xunjia; Yao, Yao; Wang, Zhen; Qu, Shaoxing; Ye, Zunzhong; Ping, Jianfeng; Ying, Yibin

doi:10.1016/j.nanoen.2019.05.041

Cited by 101 publications

(86 citation statements)

References 35 publications

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“…The availability of an abundant variety of materials and compatible thin‐film processing techniques has facilitated widespread application of TENGs in the field of self‐powered mechanosensation . Toward wearable and implantable E‐skin systems, flexible and stretchable energy devices have attracted intensive research attentions and efforts, which includes ultrathin Au nanowires (AuNWs) based wearable sensors, skin‐like multifunctional supercapacitors, flexible energy harvesters based on plasmonic‐welded, polydimethylsiloxane (PDMS)‐embedded, or environmental‐friendly processed Ag nanowires (AgNWs). To achieve advanced energy‐harvesting E‐skin, further optimizing the nanomaterial‐based conducting components in a facile and controllable way is urgent …”

Section: Introductionmentioning

confidence: 99%

Fingerprint‐Inspired Conducting Hierarchical Wrinkles for Energy‐Harvesting E‐Skin

Kang

Zhao

Huang

et al. 2019

Adv Funct Materials

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In the field of bionics, sophisticated and multifunctional electronic skins with a mechanosensing function that are inspired by nature are developed. Here, an energy-harvesting electronic skin (energy-E-skin), i.e., a pressure sensor with energy-harvesting functions is demonstrated, based on fingerprintinspired conducting hierarchical wrinkles. The conducting hierarchical wrinkles, fabricated via 2D stretching and subsequent Ar plasma treatment, are composed of polydimethylsiloxane (PDMS) wrinkles as the primary microstructure and embedded Ag nanowires (AgNWs) as the secondary nanostructure. The structure and resistance of the conducting hierarchical wrinkles are deterministically controlled by varying the stretching direction, Ar plasma power, and treatment time. This hierarchical-wrinkle-based conductor successfully harvests mechanical energy via contact electrification and electrostatic induction and also realizes self-powered pressure sensing. The energy-E-skin delivers an average output power of 3.5 mW with an open-circuit voltage of 300 V and a short-circuit current of 35 µA; this power is sufficient to drive commercial light-emitting diodes and portable electronic devices. The hierarchical-wrinkle-based conductor is also utilized as a self-powered tactile pressure sensor with a sensitivity of 1.187 mV Pa -1 in both contact-separation mode and the single-electrode mode. The proposed energy-E-skin has great potential for use as a next-generation multifunctional artificial skin, self-powered human-machine interface, wearable thin-film power source, and so on.

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Section: Introductionmentioning

confidence: 99%

Fingerprint‐Inspired Conducting Hierarchical Wrinkles for Energy‐Harvesting E‐Skin

Kang

Zhao

Huang

et al. 2019

Adv Funct Materials

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“…Nowadays, the manufacturing methods of the resistive‐type strain sensors include molding, coating, injection, vacuum filtration, etc. Nevertheless, these methods are not easy to achieve the mass production of strain sensors and are not inherently capable of manufacturing patterned strain sensors.…”

Section: Methodsmentioning

confidence: 99%

One‐Step‐Printed, Highly Sensitive, Textile‐Based, Tunable Performance Strain Sensors for Human Motion Detection

Luo

Tian

Liu

et al. 2020

Adv Materials Technologies

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manufacturing methods, screen printing solved these challenges owing to its simple process, low-cost, easily implementing patterning, and volume-production features. By changing the pattern on the screen plate, a variety of shapes of conductive patterns are easily obtained through screen printing. Moreover, the fabricated strain sensors via screen-printing method could shape a unique microstructure since the conductive ink layer at the location under mesh-opening is higher than ones under screen mesh, enabling the sensor to improve the sensitivity. [11] Currently, various conductive materials explored for building percolating networks of strain sensors mostly include carbon nanotubes (CNTs), [12] metal nanoparticles (NPs), [13] metal nanowires (NWs), [1d,3c,14] graphene, [15] ionic liquids, [16] and conductive polymers (e.g., poly(pyrrole), poly(3,4-ethylenedioxythiophene):pol ystyrene sulfonate, poly(aniline)). [17] However, the uniformity worries and low gauge factor (GF) of CNTs-based strain sensors limit their practical application in the field of sensing. [18] Metal NPs (e.g., Ag NPs) type of strain sensors usually have a disadvantage in terms of maximum strain ranges and demand high sintering temperature (> 150 °C). [19] Moreover, strain sensors based on graphene and ionic liquids usually possess low sensitivity, [6a,20] and the conductivity of conductive polymers are significantly lower than Ag NWs. [17] However, strain sensors possessing high sensitivity and wide sensing range are crucial for human motion detection. Therefore, Ag NWs-based strain sensors become a strong candidate for fabricating high-performance sensor in which Ag NWs possess many superior properties, such as excellent conductivity, straightforward preparation process, relatively low sintering temperature (120 °C), etc. The Ag NW is a mature nanomaterial, its applications will promote the commercialization and further reduce the cost of device fabrication. However, it remains a huge challenge to large-scale manufacture printed strain sensors with Ag NWs inks through one-step screen-printing technology since the Ag NWs are generally difficult to disperse uniformly in most binders owing to their high aspect ratio.Herein, Ag NWs with high aspect ratio are synthesized via an improved solvothermal method and employed to formulate the conductive ink. Rheological behavior tests are applied to study the printability of the conductive ink. Then the Ag NWs inks are transferred easily onto the textile by screen printing to fabricate textile-based strain sensors (TSSs). Furthermore, the TSSs possess tunable sensing performance by tuning the various line widths and line types of Ag NWs layer on the TSSs, which is Wearable strain sensors have attracted a lot of interests due to their unlimited prospects in applications such as human motion detections, electronic skin, and human-computer interactions. However, the complex manufacturing methods are generally used to fabricate the strain sensors with wide sensing ranges and high sensitivity. Herein...

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“…When external force is applied, the slide of the nanowires breaks the percolation network, resulting in the decreasing of the conductivity. [ 47 ] The external force can be detected through the electric signal change.…”

Section: Nanomaterials Used In Wearable Sensorsmentioning

confidence: 99%

Recent Advances in Nanomaterial‐Enabled Wearable Sensors: Material Synthesis, Sensor Design, and Personal Health Monitoring

Peng

Zhao

Ping

et al. 2020

Small

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160

105

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Wearable sensors have gained much attention due to their potential in personal health monitoring in a timely, cost‐effective, easy‐operating, and noninvasive way. In recent studies, nanomaterials have been employed in wearable sensors to improve the sensing performance in view of their excellent properties. Here, focus is mainly on the nanomaterial‐enabled wearable sensors and their latest advances in personal health monitoring. Different kinds of nanomaterials used in wearable sensors, such as metal nanoparticles, carbon nanomaterials, metallic nanomaterials, hybrid nanocomposites, and bio‐nanomaterials, are reviewed. Then, the progress of nanomaterial‐based wearable sensors in personal health monitoring, including the detection of ions and molecules in body fluids and exhaled breath, physiological signals, and emotion parameters, is discussed. Furthermore, the future challenges and opportunities of nanomaterial‐enabled wearable sensors are discussed.

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Highly conductive 1D-2D composite film for skin-mountable strain sensor and stretchable triboelectric nanogenerator

Cited by 101 publications

References 35 publications

Fingerprint‐Inspired Conducting Hierarchical Wrinkles for Energy‐Harvesting E‐Skin

Fingerprint‐Inspired Conducting Hierarchical Wrinkles for Energy‐Harvesting E‐Skin

One‐Step‐Printed, Highly Sensitive, Textile‐Based, Tunable Performance Strain Sensors for Human Motion Detection

Recent Advances in Nanomaterial‐Enabled Wearable Sensors: Material Synthesis, Sensor Design, and Personal Health Monitoring

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