Conclusion and future outlook

The performances of the nano-EM communication network are thoroughly investigated with the inclusion of the overview of the current development of terahertz (THz) technologies, which is generally considered as the most promising candidate of the frequency choices. At the same time, a profound growth has been seen by the wireless interaction of the human bodies with the nano devices in the past few years. Such growth would cause the global wearable devices market increasing from 20 million in 2015 to 187.2 million annually by 2020, which also emphasizes the importance of such studies in the book.