Corrosion-enabled tryptophan biosensing enhancement on commercially available Mg alloy surfaces.

A novel method enhances tryptophan fluorescence signals 5.45 times using a corrosion-modified magnesium alloy. Corrosion controls and stabilizes the surface morphology, resulting in a significant fluorescence enhancement. This highlights its biosensing potential with long-term stability, crucial for understanding the impact of tryptophan on metabolic and neurological disorders.