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Ultrasensitive Flexible Pressure Sensor Toward Multimodal Wearable Electronic Skins Based on Large-Scale Polystyrene Ball@Reduced-Graphene-Oxide Core-Shell Nanoparticles

Abstract

In this work, we report a fabrication of flexible film-shaped resistive-type pressure sensor with high performance and versatile applications by sandwiching polystyrene ball@reduced-graphene-oxide (PS ball@rGO) core-shell nanomaterials film layer between two thin flexible polydimethylsiloxane (PDMS) sheets. The preparation of materials and the fabrication processes of the sensor devices are simple, efficient and economical. Detecting limit of the PS ball@rGO-based pressure sensors can be as low as 3 Pa with a low energy consumption of ~1 μW at a low bias voltage of 1 V, a fast response time of 50 ms with a high sensitivity of 50.9 kPa-1 at 3-1000 Pa and high stability with loading-unloading cycles of 20,000, respectively. In addition, different applications of our flexible sensor on detecting blood pulse, swallowing, skin pulling and articular activities were demonstrated when attached to the human body. Furthermore, by an efficient scalable fabrication process, a large-area integrated pressure sensors array was demonstrated, enabling patterning of mapping spatial pressure distribution to large-area monitoring of body pressure, pulses and human actions, respectively.

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Publication details

The article was received on 08 Mar 2018, accepted on 29 Mar 2018 and first published on 29 Mar 2018


Article type: Paper
DOI: 10.1039/C8TC01153B
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Ultrasensitive Flexible Pressure Sensor Toward Multimodal Wearable Electronic Skins Based on Large-Scale Polystyrene Ball@Reduced-Graphene-Oxide Core-Shell Nanoparticles

    Y. Ai, T. H. Hsu, D. C. Wu, L. Lee, J. Chen, Y. Chen, S. Wu, C. Wu, Z. M. Wang and Y. Chueh, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC01153B

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