Long was born in Wenzhou and grew up in Shanghai, China. He received his B.S. in Optics from Fudan University, and is now pursing his Ph.D in materials science and engineering at Columbia University. Before joining the Billinge group, he worked on semiconductor nanoparticles and magnetic thin films. He is interested in applying PDF techniques to solve advanced structural problems in novel 2D materials and nanoparticles. Besides research, he likes going on road trips, playing pool, and watching movies.