May 10, 2021 Twenty-four years ago, physics professor Harold Craighead and then-doctoral student Dustin Carr, Ph.D. ’00, created the world’s smallest guitar using cutting-edge technology in what was then the Cornell Nanofabrication Facility. They’re at it again at the center – now known as the Cornell NanoScale Science and Technology Facility (CNF), in Duffield Hall. A team led by staff photolithographer Ed Camacho has created what is thought to be the world’s smallest rendition of Cornell’s iconic McGraw Tower – complete with its 161 interior steps, two sets of stairs and 21 bells. Edward Camacho/Provided Ed Camacho of the Cornell NanoScale Science and Technology Facility created a scale replica of Cornell’s iconic McGraw Tower. The model, just 1 millimeter tall, contains the tower’s 161 steps and chimes.