There are many problems when traditional temperature sensing radio frequency identification (RFID) tags are applied to logistics temperature monitoring, such as inconvenient data reading, large power consumption, and low bandwidth. Therefore, a low-dissip
The terahertz (THz) transmission properties of a single sub-wavelength circular hole in the free-standing metal foil are experimentally investigated. A THz time-domain spectroscopy (THz-TDS) is utilized to measure the transmission coefficient from 0.2 to