A review on teratronics: from present state to future

Teratronics is an interdisciplinary field of Opto-and Microelectronics embracing the important features of high-speed digital signal processing, high-frequency electronics, and optics and photonics. This is one of the significant challenging fields of solid state physics and technology with the new domains of electronics industry and research. This review outlines the different field of application of terahertz wave in security, medical imaging, chemical and biological sensing and highly emerging field of wide-band telecommunications along with the development of active and passive devices. Discussion encompasses from the founding concept of THz electronics to the development and future scopes. Content of this article will also include the new aspects of terahertz technology with their present contenders in the field of security and telecommunication. Dialogue for the newly evolved devices such as nano-ring and disk transistor along with stacked quantum dots systems also included to provide a novel glimpse for deep and underlying fundamental physical mechanism. All these topics will provide a critical supervision for further innovative stages in this field.