Multi-biomimetic Double Interlaced Wetting Janus Surface for Efficient Fog Collection.

Area of Science:

• Materials Science and Engineering
• Environmental Science and Engineering
• Biomimetics

Background:

• Water scarcity is a growing global concern, driving demand for efficient water harvesting solutions.
• Existing water harvesting technologies often suffer from high preparation costs and complex methodologies.
• There is a need for innovative, cost-effective, and sustainable approaches to atmospheric water capture.

Purpose of the Study:

• To develop an advanced multi-biomimetic surface for effective fog collection.
• To investigate the fog collection efficiency of a novel double interlaced wetting Janus surface (DIWJS).
• To explore the potential applications of DIWJS in addressing water scarcity.

Main Methods:

• Fabrication of a multi-biomimetic double interlaced wetting Janus surface (DIWJS) using laser technology.
• Characterization of the surface's unique wettability properties: superhydrophilic points/hydrophobic substrates (A-side) and superhydrophilic stripes/hydrophobic substrates (B-side).
• Evaluation of droplet capture, permeation, transportation, and shedding dynamics on the DIWJS.

Main Results:

• The DIWJS demonstrated accelerated fog collection due to its interlaced wettability and specific surface patterns.
• The A-side facilitated efficient droplet capture and permeation, while the B-side promoted droplet transportation and shedding.
• A smart farm model application was proposed, validating the broad practical potential of the DIWJS.

Conclusions:

• The developed DIWJS offers an advanced, multi-biomimetic surface for highly efficient fog harvesting.
• This research provides crucial insights into green, low-cost, and versatile strategies for mitigating water scarcity.
• The DIWJS technology presents a promising avenue for sustainable water resource management.