Over the course of 24–48 hours, a chemical reaction catalyzed by the metal film etched remarkable patterns on the germanium surface. Investigation of the process revealed that the chromium and ...

Metal-assisted chemical etching patterns at a Ge/Cr/Au interface modulated by the Euler instability. Physical Review Materials, 2025; 9 (3) DOI: 10.1103/PhysRevMaterials.9.035201 ...

Objectives: The aim of the study was to investigate the relationship between etch patterns produced on surface enamel by phosphoric acid and the corresponding bond strengths achieved. Materials ...

Curiosity about a mistake that left tiny dots on a germanium wafer with evaporated metal films led to the discovery of beautiful spiral patterns etched on the surface of the semiconductor by a ...