I won’t pretend to understand nanotechnology but I am curious to know more about an intriguing technology that could revolutionize lens optics. Imagine a future where eyeglasses are made with lenses thinner than a sheet of paper and with no color dispersion and no time-consuming surfacing or polishing. Currently under development are flat lenses made of “pixels” or “meta-atoms.” The flat meta-lenses that Columbia Engineers have developed are fabricated with a 2-D planar fabrication technique similar to that used to fabricate computer chips but simpler. Computer chips use multiple layers while the flat meta-lenses only use one layer of nanostructures. Find out more about this new technology for lenses in this column from 20/20 Magazine’s Deborah Kotob. Read More.