Scaffolds for tissue engineering are devices that exploit specific and complex physical and biological functions, in vitro or in vivo, and communicate through biochemical and physical signals with cells and, when implanted, with the body environment. Scaffolds are produced mainly with synthetic materials, and their fabrication technologies are derived from already well-established industrial processes, with some new specific technologies having been developed in the last years to address required complexities. Often, a generalist approach is followed for the trans.