where A ij and R ij are the repulsion amplitude and range, and r ij = |⃗ r j -⃗ r i | is the separation between beads i and j located at ⃗ r i and ⃗ r j respectively. The repulsion amplitude for water beads is set to A ij = 25, and likewise by convention R ij = 1 for water beads, in units of r c , the fundamental unit of length in our model.