A Flexible Hydrovoltaic Device with Strain‐Induced Ion Selectivity
Abstract Hydrovoltaic devices driven by water evaporation have demonstrated fascinating ion sensing potential in addition to power generation, yet broad challenges still remain in ion selectivity aspect to accurately detect ion species from a single‐dimensional voltage signal. Bioinspired by mechanical‐activated Piezo1 ion channels in mammals, a flexible hydrovoltaic device with strain‐induced ion selectivity through a well‐designed molecular coupling interface is developed. By virtue of the strain range exceeding 40%, theoretical perspective, in situ the trade‐off structure‐activity relationship between the water transfer efficiency and ion selectivity of nanochannel size is investigated. In the application side, the 3D ion response surface dataset of six ions (Na + , K + , Mg 2+ , Ca 2+ , Al 3+ , and Fe 3+ ) is successfully constructed to decouple the ion species/concentration with >97% accuracy by convolutional neural network (CNN) and MATLAB tools. Totally, it provides an innovative view for flexible hydrovoltaic ion sensing devices in the design/regulation of nanochannels and multi‐dimensional data acquisition and analysis.
Authors
- Feijun Zhao (ORCID: https://orcid.org/0000-0001-5686-4076)
- Jun Ma (ORCID: https://orcid.org/0000-0001-5016-8096)
- Cunkai Zhou
- Yongfeng Wang
- Changlei Ge
- Qiang Gao (ORCID: https://orcid.org/0000-0003-2929-4623)
- Xu Luo (ORCID: https://orcid.org/0000-0001-9529-0749)
- Hao Shen (ORCID: https://orcid.org/0000-0003-3565-3178)
- Shuqi Wang (ORCID: https://orcid.org/0000-0002-7315-2828)
- Yujie Liu (ORCID: https://orcid.org/0000-0003-3910-511X)
- Ting Zhang (ORCID: https://orcid.org/0000-0001-5008-2081)
- Mengyuan Liu (ORCID: https://orcid.org/0000-0001-5085-8716)
- Yucheng Zhou (ORCID: https://orcid.org/0000-0001-5797-6221)
- Lianhui Li (ORCID: https://orcid.org/0000-0003-2498-2304)
- Feng Wen (ORCID: https://orcid.org/0000-0001-6917-9713)
- Mingxu Wang
Institutions
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Chengdu Institute of Biology (CN)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2025-06-02
- DOI
- https://doi.org/10.1002/adfm.202508734
- Citations
- 4
- Primary Topic
- Advanced Sensor and Energy Harvesting Materials
- Type
- article
- Field-Weighted Citation Impact
- 2.70
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Natural Science Foundation of Jiangsu Province
- State Key Laboratory of Drug Research
- National Science Fund for Distinguished Young Scholars