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Laser Interference Additive Manufacturing: Mask Bundle Shape Bionic Shark Skin Structure.

Tao Li1,2,3, Shenzhi Wang1,2,3, Zhankun Weng1,2,3

  • 1Zhongshan Institute of Changchun University of Science and Technology, Zhongshan 528437, China.

ACS Applied Materials & Interfaces
|July 4, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a new manufacturing method, mask laser interference additive manufacturing (MLIAM), to create 3D bionic shark skin. This technique efficiently produces superhydrophobic surfaces with tunable adhesion, reducing it by up to 65%.

Keywords:
MLIAMadhesion reductionbionic shark skin structuredirectional diffusionno-loss transportation

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Biomimetics

Background:

  • Developing advanced surfaces with tailored properties like superhydrophobicity and controlled adhesion is crucial for various technological applications.
  • Bionic structures inspired by nature, such as shark skin, offer unique functionalities that can be mimicked for engineering purposes.

Purpose of the Study:

  • To introduce and validate a novel manufacturing strategy, mask laser interference additive manufacturing (MLIAM), for fabricating across-scales three-dimensional bionic shark skin structures.
  • To investigate the phenomena and mechanisms of the MLIAM curing process and analyze the resulting structural and surface properties.
  • To demonstrate the tunable adhesive force and superhydrophobicity of the fabricated structures for practical applications.

Main Methods:

  • Utilized mask laser interference additive manufacturing (MLIAM), combining laser interference lithography and mask lithography.
  • Analyzed the curing process phenomena and mechanisms of MLIAM.
  • Investigated the relationship between the growth direction of bionic shark skin structures and adhesive force.
  • Observed and modeled the directional diffusion of water droplets based on contact angle changes.
  • Modified surfaces with fluorinated silane to enhance properties.

Main Results:

  • Successfully fabricated across-scales three-dimensional bionic shark skin structures with superhydrophobicity and reduced adhesion.
  • Demonstrated tunable adhesive force, achieving a maximum adhesive reduction rate of approximately 65% by controlling the growth direction.
  • Observed and explained the directional diffusion of water droplets due to modified contact angles.
  • Achieved no-loss transportation of objects using gradient adhesive force and superhydrophobicity.

Conclusions:

  • The MLIAM technique is a feasible and flexible strategy for fabricating micro- and nanometer-scale across-structures.
  • The developed bionic shark skin structures exhibit significant adhesive reduction and superhydrophobicity, enabling efficient directional transport.
  • These findings offer potential applications in bioengineering, diversional targeting, and condenser surfaces.