**Author details**

Maria Antonietta Ferrara\* and Luigi Sirleto National Research Council (CNR), Institute for Microelectronics and Microsystems (IMM), Napoli, Italy

\*Address all correspondence to: antonella.ferrara@na.imm.cnr.it

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
