Disclosed is a method of fabricating a decomposable medical apparatus includes a drug, a medical kit, a micro-disease detection system, or an auto-navigation system. The method comprises (a) providing a substrate； (b) depositing a layer of first material onto the substrate, wherein the first material is decomposable； (c) patterning the first material layer to form one or more recessed areas in the first material layer； (d) depositing a second material on the top of the first material layer such that the second material fills the one or more recessed areas in the first material layer, wherein the second material is different from the first material； and (e) planarsing the second material to remove second material from the top of the first material layer, the remaining first and second materials forming a first component of the medical apparatus.
