Unlinked rings in a melt interpenetrate, but do not reptate as linear chains do; how do they evolve from one "lattice animal" conformation to another, thus relaxing an imposed strain?
An unentangled ring polymer in a network of fixed obstacles (a proxy for the entanglement constraints of other rings in the melt) adopts a doubled-back configuration (green loop), the "backbone" of which (red segments) is called a "lattice animal". The ring moves by withdrawing protruding loops and extending the extra length nearby.
How can we increase the efficiency and effectiveness of slipink simulations, widely used to simulate the flow behavior of entangled linear and branched polymers?
The early stages of two viscous droplets "sintering" or flowing together, resembles the spreading of a droplet on a wettable surface. How does the contact area grow with time?
How does the "handedness" of DNA molecules reveal itself in terms of the elastic behavior of the molecule as it bends and fluctuates in shape?