Plasmonic nanoparticle-linker networks were studied via molecular dynamics simulations in the canonical ensemble using lammps (Large-scale Atomic/Molecular Massively Parallel Simulator), fixing temperature T and volume V of a triply-periodic, square cuboid-shaped cell. Interactions were described by the coarse-grained PolyPatch (Polymer linked, Patchy colloid) model, which treats bifunctional linking molecules as linear bead-spring chains and nanoparticles as spherical colloids with patches that can each form at most one attractive bond of strength ε with a chain end (Fig. ). Gelation occurs by slowly "cooling" a singlephase fluid to conditions of high βε, where β = 1/k B T , and k B is the Boltzmann constant.