Ferroelectric polarization and mobile ion interaction enables tunable optical control of copper indium phosphide sulfide components

https://www.eurekalert.org/news-releases/1109148

"materials can be engineered with mobile ions to modulate their internal fields, furthering light sculpting across various wavelengths... could form the basis for tunable UV/ blue components in integrated electro-optics... control method: tuning of these components would be controlled not just by traditional electronics (electrons), but by the motion of ions within the crystal, which is only billionths of a meter thick... also control of how much the crystal slows and bends light... also applies to other types of components"