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 and ...

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 ...