> Our metasurfaces are controlled via electrically driven localised transparent heaters that switch the metasurface optical properties by biased voltages <5 V. By applying an asymmetric driving voltage, we achieve flash heating, leading to 625 μs modulation time. It is worth mentioning that such a modulation time is more than 10-fold faster than the detection limit of the human eye (13 ms). Therefore, despite the operational temperature of ~200 °C, it can still be integrated with CMOS devices.

Huh—so does this mean that it’s impractical for something like phone touchscreens? That seems awfully hot.

Really cool work in any case! :)