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Related Experiment Video

Updated: Dec 31, 2025

Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures

Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures

Published on: September 2, 2019

Active topological glass.

Jan Smrek^1,2, Iurii Chubak³, Christos N Likos³

¹Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090, Vienna, Austria. jan.smrek@univie.ac.at.

Nature Communications

|January 9, 2020

Summary

This summary is machine-generated.

Researchers discovered a new glassy state in soft matter systems. This novel state arises from the interplay between active segments and circular polymer topology, impacting relaxation dynamics.

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Area of Science:

Soft matter physics
Polymer physics

Background:

Glass transition typically depends on packing fraction or temperature.
Internal particle topology's role in glassiness is conjectured but experimentally challenging.
Circular polymers present unique topological constraints.

Purpose of the Study:

To investigate the role of internal topology and activity in inducing a glassy state in soft matter.
To explore the relationship between polymer activity, topology, and relaxation dynamics.
To compare observed phenomena with biological systems like DNA in nuclei.

Main Methods:

Studied dense solutions of circular polymers with active segments.
Utilized simulations or experiments to observe the behavior of these systems.
Analyzed the impact of isotropic driving on polymer dynamics and relaxation.

Main Results:

Demonstrated that active segments in circular polymers create a novel glassy state.
Showed that polymer activity and topology cooperatively increase relaxation times.
Observed similarities between the system's dynamics and DNA fiber behavior in eukaryotic nuclei.

Conclusions:

Internal topology and segment activity can independently induce glassiness in soft matter.
The interplay between activity and topology leads to cooperative relaxation and extended timescales.
This model offers insights into biological phenomena like DNA organization.