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Updated: Sep 22, 2025
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A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction
Published on: January 26, 2016
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Topological control of liquid-metal-dealloyed structures.
Longhai Lai1, Bernard Gaskey2, Alyssa Chuang2
1Physics Department and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, MA, 02115, USA.
Nature Communications
|May 25, 2022
Summary
Researchers developed a new method to create advanced porous materials using liquid metal dealloying. This technique overcomes previous limitations, enabling precise control over material structure and size for better applications.
Area of Science:
- Materials Science
- Metallurgy
- Nanotechnology
Background:
- Liquid metal dealloying (LMD) is a key technique for fabricating nano-/meso-scale porous structures.
- Current LMD methods face limitations in alloy composition range and resulting ligament size due to coarsening.
Purpose of the Study:
- To overcome the limitations of traditional liquid metal dealloying.
- To develop a method for controlling topology and reducing ligament size in dealloyed structures.
Main Methods:
- Computational modeling and experimental validation.
- Addition of a specific element to the metallic melt to influence topology.
- Analysis of bulk diffusive transport of immiscible elements.
Main Results:
- Demonstrated a novel approach to achieve high-genus topologies by limiting element leakage.
- Showed that bulk diffusion significantly impacts solid fraction and structural evolution.
- Successfully produced dealloyed structures with controlled size and desired topologies.
Conclusions:
- The addition of specific elements to the metallic melt is crucial for controlling dealloying outcomes.
- Bulk diffusive transport plays a fundamental role in LMD.
- This work establishes a new pathway for producing tailored porous metallic materials.
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