A battery-free wireless sensor for encrypted signal transmission via Maxwell’s displacement current by Jixin Yi, Shuzhe Liu, Zhenqiu Gao, Shaokuan Wu, Haifeng Ji, Jiaxun Hou, Guyu Jiang, Xuhui Sun, Zhen Wen

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Mechanical–electric dual characteristics solid–liquid interfacing sensor for accurate liquid identification by Lingjie Xie, Bohan Lu, Zhengdi Sima, Yina Liu, Haifeng Ji, Zhenqiu Gao, Peng Jiang, Harm Van Zalinge, Ivona Z. Mitrovic, Xuhui Sun, Zhen Wen

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