What Goes on in these laboratories is referred to as deep reactive-ion etching (DRIE). To begin, a easy silicon wafer, harking back to Terminator 2’s T-1000 in liquid form and made from two layers of mono-crystalline silicon by having an oxide layer in between, is roofed having a photoresist – https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/