Concentration dependent alloying behaviour of liquid GaAu

Area of Science:

• Materials Science
• Physical Chemistry
• Computational Chemistry

Background:

• Liquid Gallium-Gold (GaAu) systems offer potential for dynamic and self-healing materials.
• Gallium (Ga) provides liquidity near room temperature, while Gold (Au) suggests catalytic activity.
• The behavior of low gold concentrations in liquid gallium is largely unexplored, despite known Ga2Au intermetallic formation.

Purpose of the Study:

• To investigate the behavior of low gold concentrations within a liquid gallium solvent using computational methods.
• To determine the optimal gold concentration range for stabilizing single gold atoms in liquid gallium.
• To understand the fundamental interactions governing liquid GaAu systems at the atomic level.

Main Methods:

• Utilizing *ab initio* molecular dynamics simulations.
• Modeling liquid GaAu systems with varying low concentrations of gold.
• Analyzing atomic configurations and stability within the simulated liquid environment.

Main Results:

• Identified specific low gold concentrations (15%-25% Au wt) that maximize the abundance of stabilized single gold atoms.
• Revealed insights into the atomic-scale interactions between gold and gallium in a liquid state.
• Provided a computational basis for understanding the unique properties of dilute GaAu alloys.

Conclusions:

• Liquid GaAu systems with 15%-25% Au wt are promising for applications requiring stabilized single gold atoms.
• The findings contribute to the development of novel dynamic materials, particularly for catalytic applications.
• This research lays the groundwork for further experimental and computational studies on liquid metal alloys.