Abstract: A Duo Aloe Vera Cruces Concentricis antenna structure is provided and includes a first conductive layer, a dielectric layer and a second conductive layer. The first metal units of the first conductive layer form a first tapered hole, The second metal units of the first conductive layer are located in the first tapered hole and form a second tapered hole. The third metal units and the fourth metal units of the dielectric layer are aligned with the first metal units and the second metal units, respectively. The second conductive layer is connected to the dielectric layer. The first tapered hole has at least one first center line. The second tapered hole has at least one second center line. An included angle between the at least one first center line and the at least one second center line is 45 degrees.

Abstract: Provided is a simple, portable, real-time, and in vivo THz imaging device for imaging a target, e.g., a tooth in the subject. Moreover, the scanning based THz imaging device is much sufficiently sensitive as compared with the common X-ray imaging device. Therefore, the scanning based THz imaging device has the potential to operate in the density for early detection problems such as dental caries or demineralization of the enamel in the teeth. Also provided is a method for diagnosing or imaging the target in the subject by using the scanning based THz imaging device of the present disclosure.

Abstract: Provided is a simple, portable, real-time, and in vivo THz imaging device for imaging a target, e.g., a tooth in the subject. Moreover, the scanning based THz imaging device is much sufficiently sensitive as compared with the common X-ray imaging device. Therefore, the scanning based THz imaging device has the potential to operate in the density for early detection problems such as dental caries or demineralization of the enamel in the teeth. Also provided is a method for diagnosing or imaging the target in the subject by using the scanning based THz imaging device of the present disclosure.

Abstract: The present disclosure provides a terahertz (THz) transceiver including a triple-barrier resonant tunneling diode (TBRTD), a resonator antenna electrically connected to an emitter and a collector of the TBRTD, and a radiator antenna disposed over the resonator antenna and vertically aligned with the resonator antenna for reducing a system size. A corresponding method of fabricating the THz transceiver is also provided.