A new lens on the world: Improving the metalens with liquid crystal

Case Western Reserve University physics professor Giuseppe Strangi and collaborators at Harvard and the Italian university UniCal have taken a step toward making “metalenses” even more useful–by making them reconfigurable. They did this by harnessing nanoscale forces to infiltrate liquid crystals between those microscopic pillars, allowing them to shape and diffract the light in completely new ways–“tuning” the focusing power, Strangi said.