English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Thermodynamic behavior of polymer chains out of equilibrium is a fundamentalproblem in both polymer physics and biological physics. By using moleculardynamics simulation, we discover a general non-equilibrium mechanism thatcontrols the conformation and dynamics of polar active polymer, i.e., headactivity commands the overall chain activity, resulting in re-entrant swellingof active chains and non-monotonic variation of Flory exponent $\nu$. Theseintriguing phenomena lie in the head-controlled railway motion of polar activepolymer, from which two oppose non-equilibrium effects emerge, i.e., dynamicchain rigidity and the involution of chain conformation characterized by thenegative bond vector correlation. The competition between these two effectsdetermines the polymer configuration. Moreover, we identify several genericdynamic features of polar active polymers, i.e., linear decay of the end-to-endvector correlation function, polymer-size dependent crossover from ballistic todiffusive dynamics, and a polymer-length independent diffusion coefficient thatis sensitive to head activity. A simple dynamic theory is proposed tofaithfully explain these interesting dynamic phenomena. This sensitivestructural and dynamical response of active polymer to its head activityprovides us a practical way to control active-agents with applications inbiomedical engineering.

Non-Equilibrium Structural and Dynamic Behaviors of Polar Active Polymer Controlled by Head Activity