What Goes on in these laboratories is known as deep reactive-ion etching (DRIE). To begin, a smooth silicon wafer, reminiscent of Terminator two’s T-a thousand in liquid form and made from two layers of mono-crystalline silicon using an oxide layer between, is roofed using a photoresist – a lightweight-delicate product https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/