Professor Chan Chi-hou (second from left, front row), Professor Tsai Din-Ping (right, front row) and researchers at CityU have developed a novel tunable terahertz meta-device.
The?novel tunable terahertz (THz) meta-device?that allows for signal delivery to specific receivers is a key focus of attention at CityU.?
The widespread adoption of such a device, made using advanced 3D printing technology, has implications for saving energy and protecting privacy. It offers many benefits for 6G communications, wireless power transfer and remote sensing. The low-cost fabrication method is also highly promising for industrial-level components in 6G communication.
During 바카라사이트 research, 바카라사이트 team demonstrated how rotary metasurface technology can fully control 바카라사이트 THz beam’s radiation direction and coverage area based on 6G communication requirements.
The metasurface, which is 30 mm in diameter, comprises over 15,000 artificial minute meta-antennas fabricated through 3D printing.?The THz wave can be projected onto an arbitrary spot in a 2D plane or even a 3D space. Only a user located in a specific spot can receive 바카라사이트 signal.
“This arbitrary manipulation of 바카라사이트 THz focused beams allows 바카라사이트 signal to track 바카라사이트 specific receivers without wasting power on nearby receivers and impairing privacy,” said Professor Tsai. “The research offers great benefits for advanced communication systems, including security, flexibility, and signal concentration.”
Extensive and accurate computing was required to design 바카라사이트 meta-device for focal spot manipulation in a 2D plane and 3D space to produce 바카라사이트 precise location of each spot.
The metasurface comprises over 15,000 artificial minute meta-antennas fabricated through 3D printing.
This was 바카라사이트 most challenging part of 바카라사이트 discovery, 바카라사이트 researchers say. They made 바카라사이트 varifocal meta-devices by incorporating and rotating several phase profiles, i.e., 바카라사이트 cubic, gradient, and focusing phases while performing various projections within two or three meta-surfaces.
As proof of concept, 바카라사이트 team used two kinds of varifocal meta-devices to manipulate 바카라사이트 wavefront and focus arbitrarily. The doublet meta-device is designed for steering 바카라사이트 Airy beam focusing in a 2D plane, while 바카라사이트 triplet meta-device is used for manipulating 바카라사이트 Gaussian focal spot in 3D space.
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