3 papers
cond-mat.soft2026
Universal Negative Energetic Elasticity in Polymer Chains: Crossovers among Random, Self-Avoiding, and Neighbor-Avoiding Walks
Nobu C. Shirai, Naoyuki Sakumichi
Negative energetic elasticity in gels challenges the conventional understanding of gel elasticity; despite extensive research, a concise explanation remains elusive. In this study,…
cond-mat.soft2025
Analytical Expression for Fracture Profile in Viscoelastic Crack Propagation
Hokuto Nagatakiya, Naoyuki Sakumichi, Shunsuke Kobayashi +1
We derive an analytical expression for the strain field during steady-state crack propagation in viscoelastic solids described by the standard linear solid (Zener) model. This expr…
cond-mat.soft2025
Partitioning Law of Polymer Chains into Flexible Polymer Networks
Haruki Takarai, Takashi Yasuda, Naoyuki Sakumichi +1
The equilibrium partitioning of linear polymer chains into flexible polymer networks is governed by intricate entropic constraints arising from configurational degrees of freedom o…