Tackling Terahertz Tech with Morphing Metasurfaces for Next-Gen Computing, Comms, Crypto and Sensors

by David Solomonoff

Electromagnetic-Circuit co-design approach leads to dynamically programmable holographic terahertz metasurfaces

Next-gen chip tech will manipulate radio waves with programmable waveguides (think rapidly morphing radio antenna and transmitter rather than wires and switches routing electrons) via metasurfaces (materials whose properties can be changed in realtime with software).

With the help of integrated CMOS technology and electromagnetic design, Princeton researchers have demonstrated a key device that could potentially enable high-speed wireless links at terahertz frequencies.

“The key takeaway is that we are now getting a handle on practical methods for actively controlling the wave front, beam size, beam direction, and other features of terahertz beams.”

Such metasurfaces open up numerous other applications such as high-resolution imaging, gesture recognition, automotive radar, and high-speed links for augmented reality. “Looking ahead, the programmable metasurfaces will need further development to be integrated as components in innovative, next-generation networks,”

Source: Electromagnetic-circuit co-design approach leads to dynamically programmable holographic terahertz metasurfaces

Related: Tunable THz radiation from 3D topological insulator

Work will help further collective understanding of femtosecond coherent control of ultrafast spin currents in light-matter interaction and will also provide an effective way to generate spin-polarized THz waves. Wu notes that the manipulation of polarization is a step toward the goal of tailoring twisted THz waves efficiently at the source.

Will enable the development of THz science and applications in such areas as ultrafast THz opto-spintronics, polarization-based THz spectroscopy and imaging, THz biosensing, line-of-sight THz communications, and information encryption.

Research team develops new material system to convert and generate terahertz waves

Electromagnetic-circuit co-design approach leads to dynamically programmable holographic terahertz metasurfaces

Researchers develop a high-power, portable terahertz laser

A trillion turns of light nets terahertz polarized bytes

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