Our implementation consists of three basic steps. First, the two end points of the band are relaxed without any constraints so that they both move to their respective nearest local minimum. Second, we add more images between any two consecutive points along a straight A two-state model potential, V mod , with a barrier of 1 eV was used to validate our elastic band method. The white spheres correspond to an input path, whereas the black spheres display the converged band. For this model potential, we assess the accuracy to be on the order of 99%, by applying the method to ten distinct input paths for which the end points are subject to different random perturbations away from the stable states.