Microfluidic Detection of Water Contamination Using THz Antenna with Metamaterials: Analysis of Silver Nanospheres in the THz Spectrum

AbstractTHz antenna with wide bandwidth and high Q-factor is interesting for various applications including 6G applications and THz sensing and controlling the surface current of the antenna is known as a technique for bandwidth enhancement. The slot antenna with metasurface is a good candidate for this aim. In this research, we have suggested a multilayer slot antenna with metamaterial load to provide wide bandwidth which covers the 1.08 to 1.8 THz with more than 50%, and the Q-factor is increased up to 213. The metamaterial loads make various paths for the current on the surface of the antenna that makes it possible to achieve a wider bandwidth. The proposed antenna has a gain of 7.74 dBi. This antenna is considered part of a system for THz sensing and for this aim, it is combined with a microfluidic structure which is pinpointed over the surface of the antenna. Pure water with various percentages of nanoparticles of Ag (Silver) is considered as material under test (MUT). The sensitivity and figure of merit for the antenna for the MUTs are obtained to recognize the percentage of Ag nanoparticles in the water. The proposed antenna is simulated with the full wave time domain technique of FIT (finite integrated technique).
Source: Sensing and Imaging - Category: Biomedical Engineering Source Type: research