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Cost-effective surface modification for Galinstan® lyophobicity.

Shantanu Shrikant Kadlaskar1, Jun Hyeon Yoo2, Abhijeet1

  • 1Department of Mechanical Engineering, University of Texas at Dallas, 800 W. Campbell Rd., Richardson, TX 75080, United States.

Journal of Colloid and Interface Science
|January 10, 2017
PubMed
Summary
This summary is machine-generated.

This study presents a cost-effective method to make surfaces non-wettable by Galinstan®, a mercury alternative. The technique uses sandblasting, etching, and spray coating for broad applicability.

Keywords:
Engineered surfacesGalinstan®Liquid metalMicrofluidicsSuperlyophobicity

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Liquid Metal Applications

Background:

  • Galinstan® is a promising non-toxic liquid metal alternative to mercury.
  • The extreme wetting and viscoelastic properties of Galinstan® hinder its widespread application.
  • Overcoming Galinstan®'s wettability is crucial for advancing liquid metal technologies.

Purpose of the Study:

  • To develop a cost-effective fabrication method for creating Galinstan®-repellent surfaces.
  • To investigate the combination of surface texture and chemistry for achieving non-wettability.
  • To demonstrate the feasibility of applying this method to various common surfaces.

Main Methods:

  • Utilizing sandblasting, chemical etching, and spray coating for surface modification.
  • Leveraging Galinstan®'s high surface tension and yield strength to prevent liquid metal penetration into surface asperities.
  • Fabricating surfaces that mimic superhydrophobic properties for liquid metal repellency.

Main Results:

  • Achieved superior non-wettability to Galinstan® on treated surfaces.
  • Quantified performance through high static and dynamic contact angles and minimal hysteresis.
  • Demonstrated excellent impact resistance of the fabricated non-wettable surfaces.

Conclusions:

  • The developed fabrication method is effective in rendering surfaces non-wettable by Galinstan®.
  • The technique is versatile, applicable to metals, ceramics, and plastics.
  • The scalability and cost-effectiveness of the method support its industrial adoption.