Symposium N, "Diamond Electronics and Biotechnology-Fundamentals to Applications V" was held at the 2011 MRS Fall Meeting in Boston, Massachusetts, November 28-December 2, 2011. This volume contains submitted, peer-reviewed articles of the rapid advances in these fields. The scope of this meeting stretched from fundamentals to applications of all kinds of diamond, be they single crystal to nanocrystalline, bulk film to nanoparticle. New forms and applications of carbon such as graphene and single photon emission were given particular attention. The attendance of this series has been consistently high due to the excellent quality and international nature of the contributions, as well as the choice of invited speakers. New areas such as microplasma arrays from CVD were placed alongside such standards as diamond growth and electrochemistry. In this symposium, 10 invited oral presentations, 49 contributed oral presentations and 46 posters were presented, representing more than 15 countries.