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Fast-response, high-sensitivity multi-modal tactile sensors based on PPy/Ti3C2Tx films for multifunctional applications

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Abstract

In recent years, multi-modal flexible tactile sensors have become an important direction in the development of electronic skin because of their excellent sensitivity, flexibility and wearable properties. In this work, a humidity-pressure multi-modal flexible sensor based on polypyrrole (PPy)/Ti3C2Tx sensitive film packaged with porous polydimethylsiloxane (PDMS) is investigated by combining the sensitive structure generation mechanism of in situ polymerization to achieve the simultaneous detection of humidity and pressure, which has a sensitivity of 89,113.4 Ω/% RH in a large humidity range of 0%–97% RH, and response/recovery time of 2.5/1.9 s. The tactile pressure sensing has a high sensitivity, a fast response of 67/52 ms, and a wide detection limit. The device also has excellent performance in terms of stability and repeatability, making it promising for respiratory pattern and motion detection. This work provides a new solution to address the construction of multi-modal tactile sensors with potential applications in the fields of medical health, epidemic prevention.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 51777215), the Special Foundation of the Taishan Scholar Project (No. tsqn202211077), the Shandong Provincial Natural Science Foundation (No. ZR2023ME118), and the Natural Science Foundation of Qingdao City (No. 23-2-1-219-zyyd-jch).

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  1. College of Control Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, China

    Guangshuai Xi, Dongzhi Zhang, Mingcong Tang, Hao Zhang, Yuehang Sun, Yubiao Zhang, Haolin Cai, Hui Xia & Dandi Zhou

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  1. Guangshuai Xi
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  2. Dongzhi Zhang
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  3. Mingcong Tang
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  4. Hao Zhang
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  5. Yuehang Sun
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  8. Hui Xia
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  9. Dandi Zhou
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Correspondence to Dongzhi Zhang.

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Xi, G., Zhang, D., Tang, M. et al. Fast-response, high-sensitivity multi-modal tactile sensors based on PPy/Ti3C2Tx films for multifunctional applications. Nano Res. 17, 4410–4419 (2024). https://doi.org/10.1007/s12274-023-6276-8

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