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Peer-reviewedCC BYBiomimetics (Basel, Switzerland)

Fabrication of a Hierarchical Bioinspired Super-Contrast Wettability Surface for Enhanced Atmospheric Water Collection.

  • Ming Li1
  • Bo Wang1
  • Bingyang Wang2
  • Yanling Wan3
  1. 1School of Intelligent Manufacturing and Electrical Engineering, Guangzhou Institute of Science and Technology, Guangzhou 510540, China.
  2. 2College of Mechanical and Automotive Engineering, Ningbo University of Technology, Ningbo 315211, China.
  3. 3Ministry of Education Key Laboratory of Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China.
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Abstract

With a growing population and severe water pollution, worldwide water scarcity has become a serious problem. In this context, collecting water from the atmosphere is regarded as a promising route to alleviate the global water shortage. Inspired by indocalamus leaves, desert beetle backs and cactus spines, we report a hierarchical bioinspired super-contrast wettability surface (BSCWS) fabricated on Ti-6Al-4V alloy via nanosecond laser selective processing and chemical modification. The BSCWS exhibits extreme contrast wettability with superhydrophobic regions (water contact angle: 167.4 ± 1.1°) and superhydrophilic regions (water contact angle: 0°). The mechanism underlying the extreme wettability transition was elucidated through systematic chemical composition analysis. Furthermore, a novel type of three-level BSCWS was designed, which can realize large-area water collection, directional transport and centralized storage. Under 100% relative humidity, the three-level BSCWS achieves a collection efficiency of 203.1 ± 10.8 g/m²·h, which is 1.3, 3.3, 5.6 and 8.0 times higher than those of the two-level BSCWS, superhydrophilic, superhydrophobic and smooth surfaces. A dual Laplace pressure-driven mechanism is proposed to explain the enhanced atmospheric water collection performance. This work provides a scalable and light-weight strategy for high-efficiency atmospheric water collection.

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Cite

BibTeXRIS
BibTeX
@article{li2026fabrication,
  title = {{Fabrication of a Hierarchical Bioinspired Super-Contrast Wettability Surface for Enhanced Atmospheric Water Collection.}},
  author = {Ming Li and Bo Wang and Bingyang Wang and Yanling Wan},
  journal = {Biomimetics (Basel, Switzerland)},
  year = {2026},
  month = oct,
  doi = {10.3390/biomimetics11100759},
  url = {https://europepmc.org/article/MED/42930311},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Fabrication of a Hierarchical Bioinspired Super-Contrast Wettability Surface for Enhanced Atmospheric Water Collection.
AU  - Ming Li
AU  - Bo Wang
AU  - Bingyang Wang
AU  - Yanling Wan
PY  - 2026
DA  - 2026/10/20
JO  - Biomimetics (Basel, Switzerland)
DO  - 10.3390/biomimetics11100759
UR  - https://europepmc.org/article/MED/42930311
AB  - With a growing population and severe water pollution, worldwide water scarcity has become a serious problem. In this context, collecting water from the atmosphere is regarded as a promising route to alleviate the global water shortage. Inspired by indocalamus leaves, desert beetle backs and cactus spines, we report a hierarchical bioinspired super-contrast wettability surface (BSCWS) fabricated on Ti-6Al-4V alloy via nanosecond laser selective processing and chemical modification. The BSCWS exhibits extreme contrast wettability with superhydrophobic regions (water contact angle: 167.4 ± 1.1°) and superhydrophilic regions (water contact angle: 0°). The mechanism underlying the extreme wettability transition was elucidated through systematic chemical composition analysis. Furthermore, a novel type of three-level BSCWS was designed, which can realize large-area water collection, directional transport and centralized storage. Under 100% relative humidity, the three-level BSCWS achieves a collection efficiency of 203.1 ± 10.8 g/m²·h, which is 1.3, 3.3, 5.6 and 8.0 times higher than those of the two-level BSCWS, superhydrophilic, superhydrophobic and smooth surfaces. A dual Laplace pressure-driven mechanism is proposed to explain the enhanced atmospheric water collection performance. This work provides a scalable and light-weight strategy for high-efficiency atmospheric water collection.
SN  - 2313-7673
ER  -