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Ultrasensitive and ultraflexible e-skins with dual functionalities for wearable electronics
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TLDR
In this article, the authors demonstrate ultrathin, flexible multimodal sensing capability of e-skin sensor based on polyaniline hollow nanospheres composite films (PANI-HNSCF).Abstract:
The development of electronic skin is the key to the realization of artificial intelligence that immediate contacts with humans, as well as biomedical applications. To mimic the tactile sensing properties of natural skin, large ultrathin arrays of pixel high-performance pressure sensors on a flexible and stretchable substrate are required. Here, we demonstrate ultrathin, flexible multimodal sensing capability of e-skin sensor based on polyaniline hollow nanospheres composite films (PANI-HNSCF). Hollow structure endows the thin films with structure-derived elasticity and a low effective elastic modulus of 0.213 MPa. The effective amplification and transformation of various external stimuli to independent electrical signals enables the precise and continuous sensing of pressure and temperature with a high pressure sensitivity of 31.6 kPa−1 and an accurate temperature resolution of 0.08 °C−1. Importantly, the single sensing unit can be easily integrated sensor arrays with excellent sensing performance. Our work provided the technological verify between structure of materials and properties of device and make hollow materials possess promising application in e-skin and health-monitoring elements.read more
Citations
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TL;DR: This work bridges the technological gap between signal transduction, conditioning, processing and wireless transmission in wearable biosensors by merging plastic-based sensors that interface with the skin with silicon integrated circuits consolidated on a flexible circuit board for complex signal processing.
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An ultra-lightweight design for imperceptible plastic electronics
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TL;DR: In this paper, the authors present a platform that makes electronics both virtually unbreakable and imperceptible on polyimide polysilicon elastomers, which can be operated at high temperatures and in aqueous environments.
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Flexible polymer transistors with high pressure sensitivity for application in electronic skin and health monitoring
Gregor Schwartz,Benjamin C. K. Tee,Jianguo Mei,Anthony L. Appleton,Do Hwan Kim,Do Hwan Kim,Huiliang Wang,Zhenan Bao +7 more
TL;DR: It is demonstrated that the flexible pressure-sensitive organic thin film transistors fabrication can be used for non-invasive, high fidelity, continuous radial artery pulse wave monitoring, which may lead to the use of flexible pressure sensors in mobile health monitoring and remote diagnostics in cardiovascular medicine.
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A wearable and highly sensitive pressure sensor with ultrathin gold nanowires
Shu Gong,Willem Heinrich Schwalb,Yongwei Wang,Yi Chen,Yue Tang,Jye Si,Bijan Shirinzadeh,Wenlong Cheng +7 more
TL;DR: An efficient, low-cost fabrication strategy to construct a highly sensitive, flexible pressure sensor by sandwiching ultrathin gold nanowire-impregnated tissue paper between two thin polydimethylsiloxane sheets is reported, enabling facile large-area integration and patterning for mapping spatial pressure distribution.
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Softening of nanocrystalline metals at very small grain sizes
TL;DR: In this paper, the deformation of nanocrystalline copper has been studied and it is shown that the hardness and yield stress of the material typically increase with decreasing grain size, a phenomenon known as the reverse Hall-Petch effect.