Professor Hongtao Ding and his team at the University of Iowa have developed a novel laser-based metasurface fabrication (LMF) process that can produce large-size, transparent, and conductive films on quartz substrates.

The LMF process consists of two steps: sputtering an ultra-thin metal film on the substrate, and laser patterning the film with a nanosecond pulsed laser. The resulting film has low sheet resistance, high optical transmittance, and bandpass filtering effect in the THz frequency range. This film can be used as a bandpass filter for THz transmission and has frequency selectivity in both visible and THz regions. The LMF process is low-cost, high-throughput, and versatile, and offers a significant improvement over existing methods for fabrication of such films.

This technology is now available for licensing: https://lnkd.in/ggrg2J9X