Mesh-Armored Re-Entrant Structures via Solvent Evaporation-Induced Fragmentation for Abrasion-Durable Super-Repellent Surfaces
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View abstract on PubMed
Summary
This summary is machine-generated.This study introduces a scalable method for creating durable super-repellent surfaces using a stainless-steel mesh. The novel superhydrophobic mesh re-entrant (SHM-R) structures offer enhanced mechanical robustness and stable underwater plastron performance.
Area Of Science
- Materials Science
- Surface Engineering
- Nanotechnology
Background
- Super-repellent surfaces are crucial for applications like self-cleaning and drag reduction.
- Scalable fabrication and mechanical durability remain significant challenges for current super-repellent technologies.
Purpose Of The Study
- To develop a scalable and robust method for fabricating hierarchical micro-nano re-entrant structures.
- To enhance the mechanical stability and underwater performance of super-repellent surfaces.
Main Methods
- Fabrication of superhydrophobic mesh re-entrant (SHM-R) structures via dip-coating a stainless-steel mesh with nanoparticle-infused superhydrophobic coating.
- Utilizing solvent evaporation-induced membrane fragmentation for spontaneous structure formation within mesh pores.
- Testing super-repellency using water and ethanol contact angle measurements and abrasion resistance tests.
- Evaluating underwater plastron stability and gas replenishment capabilities.
Main Results
- Achieved exceptional super-repellency with water (CA 160.3°, SA 0.9°) and 30% ethanol (CA 150.6°, SA 7.4°).
- Demonstrated superior abrasion resistance, retaining properties after 100 cycles under 12.3 kPa pressure due to the mesh framework acting as mechanical armor.
- Showcased robust underwater plastron stability with improved water pressure resistance and rapid, capillary-driven air self-suction for plastron replenishment.
Conclusions
- The developed SHM-R structures offer a scalable and mechanically robust solution for super-repellent surfaces.
- The stainless-steel mesh framework significantly enhances durability and underwater performance.
- This approach provides a viable pathway for practical implementation of super-repellent surfaces in demanding engineering applications.
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