Room-temperature high-precision printing of flexible wireless electronics based on MXene inks

Yuzhou Shao, Lusong Wei, Xinyue Wu, Chengmei Jiang, Yao Yao, Bo Peng, Han Chen, Jiangtao Huangfu, Yibin Ying (), Chuanfang John Zhang () and Jianfeng Ping ()
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Yuzhou Shao: School of Biosystems Engineering and Food Science, Zhejiang University
Lusong Wei: Zhejiang University
Xinyue Wu: School of Biosystems Engineering and Food Science, Zhejiang University
Chengmei Jiang: School of Biosystems Engineering and Food Science, Zhejiang University
Yao Yao: School of Biosystems Engineering and Food Science, Zhejiang University
Bo Peng: School of Biosystems Engineering and Food Science, Zhejiang University
Han Chen: School of Biosystems Engineering and Food Science, Zhejiang University
Jiangtao Huangfu: Zhejiang University
Yibin Ying: School of Biosystems Engineering and Food Science, Zhejiang University
Chuanfang John Zhang: Sichuan University
Jianfeng Ping: School of Biosystems Engineering and Food Science, Zhejiang University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Wireless technologies-supported printed flexible electronics are crucial for the Internet of Things (IoTs), human-machine interaction, wearable and biomedical applications. However, the challenges to existing printing approaches remain, such as low printing precision, difficulty in conformal printing, complex ink formulations and processes. Here we present a room-temperature direct printing strategy for flexible wireless electronics, where distinct high-performance functional modules (e.g., antennas, micro-supercapacitors, and sensors) can be fabricated with high resolution and further integrated on various flat/curved substrates. The additive-free titanium carbide (Ti3C2Tx) MXene aqueous inks are regulated with large single-layer ratio (>90%) and narrow flake size distribution, offering metallic conductivity (~6, 900 S cm−1) in the ultrafine-printed tracks (3 μm line gap and 0.43% spatial uniformity) without annealing. In particular, we build an all-MXene-printed integrated system capable of wireless communication, energy harvesting, and smart sensing. This work opens a door for high-precision additive manufacturing of printed wireless electronics at room temperature.

Date: 2022
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DOI: 10.1038/s41467-022-30648-2

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