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Updated: Oct 6, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Polymers critical point originates Brownian non-Gaussian diffusion
Sankaran Nampoothiri1, Enzo Orlandini1, Flavio Seno1
1Dipartimento di Fisica e Astronomia "G. Galilei"-DFA, Sezione INFN, Università di Padova, Via Marzolo 8, 35131 Padova (PD), Italy.
Abstract:
We demonstrate that size fluctuations close to polymers critical point originate the non-Gaussian diffusion of their center of mass. Static universal exponents γ and ν-depending on the polymer topology, on the dimension of the embedding space, and on equilibrium phase-concur to determine the potential divergency of a dynamic response, epitomized by the center-of-mass kurtosis. Prospects in experiments and stochastic modeling brought about by this result are briefly outlined.
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