Detection of non-joint areas tiny strain and anti-interference voice recognition by micro-cracked metal thin film

Wang, Chunfeng; Zhao, Jing; Ma, Chuang; Sun, Junlu; Tian, Liangliang; Li, Xiaohua; Li, Fangtao; Han, Xun; Liu, Chuntai; Shen, Changyu; Dong, Lin; Yang, Jin; Pan, Caofeng

doi:10.1016/j.nanoen.2017.02.050

Cited by 148 publications

(128 citation statements)

References 39 publications

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“…Cracks can provide transformative capabilities in strain sensors . An analogous example in nature is the spider's slit organs that are located between the metatarsus and tarsus bones near the leg joints (Figure d).…”

Section: Structural Designs For Soft Electronicsmentioning

confidence: 99%

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Materials and Structures toward Soft Electronics

et al. 2018

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Soft electronics are intensively studied as the integration of electronics with dynamic nonplanar surfaces has become necessary. Here, a discussion of the strategies in materials innovation and structural design to build soft electronic devices and systems is provided. For each strategy, the presentation focuses on the fundamental materials science and mechanics, and example device applications are highlighted where possible. Finally, perspectives on the key challenges and future directions of this field are presented.

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Section: Structural Designs For Soft Electronicsmentioning

confidence: 99%

“…Further increasing the applied strain will lead to fracture, when the displacement of the adjacent conductive segments overcomes the asperity height . Similar design strategies have been applied to other materials such as Au, graphene, ITO, and graphite, which enable different strain sensing ranges and use cases.…”

Section: Structural Designs For Soft Electronicsmentioning

confidence: 99%

Materials and Structures toward Soft Electronics

et al. 2018

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“…And most of them stray closed after the strain disappearwith the overlapped crack edges. Therefore, the working principle of the sensor can be interpreted as overlap mode and tunnel effect (see Figure S5, Supporting Information). Applying an external strain would change the state of cracks; as a result, the output current changes.…”

Section: Resultsmentioning

confidence: 99%

“…E‐skin has recently attracted significant attention due to their facile interaction with human body and simple structure . It emulates human skin to detect temperature, strain, humidity, and pressure by converting external stimuli into electrical signals. Improving the performance of electronic skin (e‐skin) and adding more features is its development goal.…”

Section: Introductionmentioning

confidence: 99%

“…In terms of performance, for e‐skin that can sense strain, researchers often use rigid conductive materials to construct new structures, such as graphene, carbon nanotubes, and carbons, but their sensitivity is generally low, while microcrack‐based metal film strain sensors have good performance; for e‐skins that can sense pressure, capacitive pressure sensors have the advantage of simple structure. In this respect, it is better than piezoelectricity and piezoresistivity .…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Large‐Area Bimodal Sensors by All‐Inkjet‐Printing

Tao

et al. 2019

Adv Materials Technologies

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Electronic skin (e‐skin) is a wearable smart terminal that senses changes of external environment like human skin. It will develop into an indispensable way of interaction between humanity and technology. Here, this bimodal e‐skin that senses bending strain and pressure using an all‐inkjet‐printing method is synthesized. It is based on a microcracked metal film and a sandwich capacitor structure. It is characterized by the metal film of the strain sensor as a bottom electrode of pressure sensor; the electrode plate of the device plays a dual role. When tested, the strain sensor and pressure sensor do not interfere with each other. The device has excellent performance with low pressure‐detection of 2 Pa and high stability over more than 5700 cycles for pressure sensor and high gauge factor (4000) and good stability (over 4500 cycles) for strain sensor, which can recognize the radius of curvature of human activities and objects, and can detect the pressure distribution and the curvature of irregular surfaces, showing its potential applications in wearable devices.

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