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A monolayer Janus copper mesh with a synergistic hydrophilic/hydrophobic surface was fabricated using surface spraying and nanolaser surface modification. The effects of mesh number, width, and an optimized sword-shaped tip on water collection efficiency, with visual recordings capturing the movement process. Results indicate that the synergistic hydrophilic/hydrophobic zone design markedly enhances water collection efficiency, achieving over a 30% improvement for the 120-mesh and over 70% for the 200-mesh compared to a fully hydrophilic surface. The 1 mm/1 mm hydrophilic/hydrophobic zone width combination was most effective, boosting water collection efficiency by 61% to 4,687.5 mg/cm2/h for the 120-mesh. Additionally, a 4-mm tip increased single droplet mass by 40.7% and reduced dislodgment frequency by 14.3%.

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An Experimental Investigation into the Synergistic Surface Transport Mechanisms on Janus Copper Meshes with Hydrophilic/Hydrophobic Properties

  • 会议论文

  • 发表日期：

    2026年

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  • Weibo Yang,
  • Jiayi Zheng,
  • Zhangyi Li,
  • Songlin Lan,
  • Jun Bao

摘要

A monolayer Janus copper mesh with a synergistic hydrophilic/hydrophobic surface was fabricated using surface spraying and nanolaser surface modification. The effects of mesh number, width, and an optimized sword-shaped tip on water collection efficiency, with visual recordings capturing the movement process. Results indicate that the synergistic hydrophilic/hydrophobic zone design markedly enhances water collection efficiency, achieving over a 30% improvement for the 120-mesh and over 70% for the 200-mesh compared to a fully hydrophilic surface. The 1 mm/1 mm hydrophilic/hydrophobic zone width combination was most effective, boosting water collection efficiency by 61% to 4,687.5 mg/cm2/h for the 120-mesh. Additionally, a 4-mm tip increased single droplet mass by 40.7% and reduced dislodgment frequency by 14.3%.