I am interested in nonequilibrium systems and their collective behaviors. Both theoretical and numerical simulations are used in understanding various biological and non-biological systems. Focusing on the following areas: (1) amorphous materials with complete photonic band gap based on self-propelled Voronoi model; (2) how does variability of single cell affect the jamming behavior of the system; (3) Mechanical metamaterials with phonon band gaps inspired by biological tissues.