AI Insight
Researchers have identified the structural reason why gold resists oxidation and tarnishing, unlike many chemically similar metals. The key mechanism appears to be the distinctive "herringbone" atomic surface pattern unique to gold, which inhibits the chemical reactions responsible for corrosion. This atomic arrangement prevents oxygen and other reactive molecules from bonding effectively with the gold surface.
Why it matters
Understanding the precise atomic mechanism behind gold's corrosion resistance could inform the design of new corrosion-resistant materials and surface coatings for use in electronics, medical devices, and industrial applications. It may also guide efforts to engineer other metals with similarly stable surface configurations.
Gold doesn’t tarnish like similar metals do. A new paper says that the key is the intricate “herringbone” pattern of its atoms.