Harvard Engineers Build Chip That Twists Light To Reveal Its Hidden “Handedness” https://scitechdaily.com/harvard-engineers-build-chip-tha… A twisted pair of photonic crystals integrated with MEMS can dynamically control the handedness of light on a chip. Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a chip scale device that can actively control the “handedness” of light as it moves through it, a property known as optical chirality. The system works by slightly twisting two specially engineered photonic crystals. https://stacker.news/items/1455006