Paulson School of Engineering and Applied Sciences. He is interested in mathematical modeling and scientific computation for interdisciplinary applications in science and engineering. He is particularly interested in the mechanics of materials, numerical methods, and geometry. He has released several software libraries, including Voro++ for three-dimensional computations of the Voronoi tessellation, a technique in computational geometry that has a wide range of applications.Prior to his appointment at Harvard, Rycroft was a Morrey Assistant Professor in the Department of Mathematics at the University of California, Berkeley. While in Berkeley, he was part of the Bay Area Physical Sciences–Oncology Center (PS–OC), where he investigated how cancer cells mechanically interact with each other and their environment.