Bond strength and etch patterns vary between tooth type and between teeth within a tooth type. An 'ideal' enamel etch pattern is not essential for high bond strength. Objectives: The aim of the study ...

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 ...

Fiber lasers aren’t nearly as common as their diode and CO2 cousins, but if you’re lucky enough to have one in your garage or local makerspace, this technique for depositing thin films of metals in ...