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Thermo-Induced Biomimetic Switchable Slippery Interfaces with Strong Dual-Phase Adhesion via Femtosecond Laser
Yansheng Yao1, Jianwei Zhou1, Suwan Zhu2
1Intelligent Manufacturing Laboratory, School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230009, P. R. China.
Nano Letters
|March 10, 2025
Summary
Researchers developed a novel switchable slippery interface inspired by nature. This smart surface offers robust adhesion to both solids and liquids, with potential applications in robotics and wearable devices.
Area of Science:
- Materials Science
- Biomimetics
- Surface Science
Background:
- Switchable adhesion surfaces are crucial for advanced applications like robotics and wearable devices.
- Current technologies face challenges in achieving universal adhesion across solid and liquid interfaces.
Purpose of the Study:
- To develop a thermo-induced biomimetic switchable slippery interface (TBSSI) with universal adhesion capabilities.
- To mimic natural adhesion mechanisms found in octopus tentacles and slippery mussels.
Main Methods:
- Fabrication of the TBSSI using femtosecond laser drilling on polydimethylsiloxane (PDMS) sheets.
- Infusion of phase-change paraffin into the laser-drilled structures.
- Utilizing Joule heating for paraffin phase transition to induce solid adhesion.
Main Results:
- The TBSSI demonstrates robust adhesion to both solid and liquid interfaces.
- Achieved a significant solid adhesion strength of approximately 142 kPa.
- Exhibited excellent self-repairing capabilities and retained adhesion strength after mechanical abrasion.
Conclusions:
- The developed TBSSI offers a promising solution for universal switchable adhesion.
- This research provides new insights for designing advanced adhesive surfaces.
- Potential impact on fields including ultrafast laser microfabrication and soft robotics.
