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Updated: Jul 20, 2025

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Nature-Inspired Surface Engineering for Efficient Atmospheric Water Harvesting.

Zihao Li1,2, Luheng Tang1, Hanbin Wang1

  • 1The Institute of Optics, University of Rochester, Rochester, New York 14627, United States.

ACS Sustainable Chemistry & Engineering
|August 4, 2023
PubMed
Summary

This study introduces a novel hybrid superhydrophilic/superhydrophobic aluminum surface for efficient atmospheric water harvesting. The nature-inspired design achieves a high water collection rate of 0.85 kg m⁻² h⁻¹, offering a sustainable solution to water scarcity.

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Area of Science:

  • Materials Science
  • Environmental Engineering
  • Nanotechnology

Background:

  • Global water scarcity necessitates sustainable and efficient water collection methods.
  • Conventional atmospheric water collectors often lack efficiency, durability, or cost-effectiveness.
  • Nature-inspired designs offer potential for advanced material functionalities.

Purpose of the Study:

  • To develop a novel, high-performance atmospheric water collector.
  • To investigate a hybrid superhydrophilic/superhydrophobic aluminum surface for enhanced water harvesting.
  • To optimize the design for efficiency, durability, and practical application.

Main Methods:

  • Fabrication of a hybrid superhydrophilic/superhydrophobic aluminum surface using laser and chemical treatments.
  • Characterization of surface properties, including a 163° contact angle contrast.
  • Utilizing simulations and experimental measurements to optimize water harvesting performance.

Main Results:

  • Achieved a significant contact angle contrast, enabling a self-pumped water harvesting mechanism.
  • Optimized the repeating unit pattern for maximum water collection efficiency.
  • Demonstrated a high water harvesting rate of 0.85 kg m⁻² h⁻¹.

Conclusions:

  • The novel hybrid surface design significantly enhances atmospheric water harvesting efficiency.
  • The collector exhibits excellent stability, flexibility, and thermal conductivity, indicating strong potential for practical use.
  • This technology presents a promising sustainable solution for addressing global water shortages.