H.P. Neves, Imec, Belgium
The choice of materials for building an implant will ultimately dictate its reliability and how the body will respond to its presence. This chapter introduces fundamental aspects of the interaction between biomaterials and the body. It then presents some of the most commonly used materials and their characteristics. Special emphasis is given to the electrical interfacing with tissue. The chapter also discusses some of the main issues in implantable system packaging. Finally, the chemical and physical preparation of surfaces is presented as well as the mechanical interfacing to tissue.