**Author details**

Hitoshi Ohsato1,2\*, Jobin Varghese1 and Heli Jantunen1

1 Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland

2 Department of Research, Nagoya Industrial Science Research Institute, Nagoya, Japan

\*Address all correspondence to: ohsato.hitoshi@gmail.com

© 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.
