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Related Experiment Video

Updated: Jan 26, 2026

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry

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Published on: August 25, 2016

Mechanical Pulling of Linked Ring Polymers: Elastic Response and Link Localisation.

Michele Caraglio¹, Cristian Micheletti², Enzo Orlandini³

¹Dipartimento di Fisica e Astronomia, Università di Padova and sezione CNISM, Via Marzolo 8, I-35131 Padova, Italy. michele.caraglio@pd.infn.it.

|April 12, 2019

Summary

Semiflexible rings respond nonmonotonically to stretching, with extension depending on link complexity. Langevin dynamics simulations reveal how mechanical tension affects linked ring properties, aiding in link type differentiation.

Keywords:

catenanes linked portion mechanical stretching semiflexible rings topological links

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An Instrumented Pull Test to Characterize Postural Responses

An Instrumented Pull Test to Characterize Postural Responses

Published on: April 6, 2019

Area of Science:

Soft matter physics
Polymer physics
Computational physics

Background:

Topological entanglement is crucial in polymer physics.
Understanding mechanical response of linked polymers is key to their applications.

Purpose of the Study:

Investigate mechanical stretching response of semiflexible topologically linked rings.
Analyze how link complexity influences stretching behavior.
Determine optimal pulling protocols for distinguishing link types.

Main Methods:

Langevin dynamics simulations.
Constant-force and constant-velocity pulling protocols.
Analysis of metric and topology-related observables.

Main Results:

Nonmonotonic dependence of average extension (normalized by single ring extension) on applied force.
Increased prominence of nonmonotonic behavior with higher link complexity.
Origin of nonmonotonicity attributed to differential stretching compliance.

Conclusions:

Mechanical stretching reveals unique nonmonotonic responses in linked rings.
Link complexity significantly impacts stretching behavior.
Specific pulling protocols can differentiate between various topological links.