baiduhaiChicago News, Sports & Business

Home > Reviews

Author Image: Geoff Ziezulewicz

Geoff Ziezulewicz

All Stories

chicagotribune default image
This is a double exposure of graduate student Xisen Hou, left, Chenfeng Ke, right, and professor Fraser Stoddart, below, of Northwestern. They invented a new kind of fluorescent ink, which is only visible with ultraviolet light, as in this image inside a small dark room, Wednesday April 22, 2015.