Physical Links: defining and detecting inter-chain entanglement

Abstract Fluctuating filaments, from densely-packed biopolymers to defect lines in structured fluids, are prone to become interlaced and form intricate architectures. Understanding the ensuing mechanical and relaxation properties depends critically on being able to capture such entanglement in quant...

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Autores principales:	Michele Caraglio, Cristian Micheletti, Enzo Orlandini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/432adb3bb5964dcdb5e1e2765a8e41ce
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spelling	oai:doaj.org-article:432adb3bb5964dcdb5e1e2765a8e41ce2021-12-02T15:04:51ZPhysical Links: defining and detecting inter-chain entanglement10.1038/s41598-017-01200-w2045-2322https://doaj.org/article/432adb3bb5964dcdb5e1e2765a8e41ce2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01200-whttps://doaj.org/toc/2045-2322Abstract Fluctuating filaments, from densely-packed biopolymers to defect lines in structured fluids, are prone to become interlaced and form intricate architectures. Understanding the ensuing mechanical and relaxation properties depends critically on being able to capture such entanglement in quantitative terms. So far, this has been an elusive challenge. Here we introduce the first general characterization of non-ephemeral forms of entanglement in linear curves by introducing novel descriptors that extend topological measures of linking from close to open curves. We thus establish the concept of physical links. This general method is applied to diverse contexts: equilibrated ring polymers, mechanically-stretched links and concentrated solutions of linear chains. The abundance, complexity and space distribution of their physical links gives access to a whole new layer of understanding of such systems and open new perspectives for others, such as reconnection events and topological simplification in dissipative fields and defect lines.Michele CaraglioCristian MichelettiEnzo OrlandiniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michele Caraglio Cristian Micheletti Enzo Orlandini Physical Links: defining and detecting inter-chain entanglement
description	Abstract Fluctuating filaments, from densely-packed biopolymers to defect lines in structured fluids, are prone to become interlaced and form intricate architectures. Understanding the ensuing mechanical and relaxation properties depends critically on being able to capture such entanglement in quantitative terms. So far, this has been an elusive challenge. Here we introduce the first general characterization of non-ephemeral forms of entanglement in linear curves by introducing novel descriptors that extend topological measures of linking from close to open curves. We thus establish the concept of physical links. This general method is applied to diverse contexts: equilibrated ring polymers, mechanically-stretched links and concentrated solutions of linear chains. The abundance, complexity and space distribution of their physical links gives access to a whole new layer of understanding of such systems and open new perspectives for others, such as reconnection events and topological simplification in dissipative fields and defect lines.
format	article
author	Michele Caraglio Cristian Micheletti Enzo Orlandini
author_facet	Michele Caraglio Cristian Micheletti Enzo Orlandini
author_sort	Michele Caraglio
title	Physical Links: defining and detecting inter-chain entanglement
title_short	Physical Links: defining and detecting inter-chain entanglement
title_full	Physical Links: defining and detecting inter-chain entanglement
title_fullStr	Physical Links: defining and detecting inter-chain entanglement
title_full_unstemmed	Physical Links: defining and detecting inter-chain entanglement
title_sort	physical links: defining and detecting inter-chain entanglement
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/432adb3bb5964dcdb5e1e2765a8e41ce
work_keys_str_mv	AT michelecaraglio physicallinksdefininganddetectinginterchainentanglement AT cristianmicheletti physicallinksdefininganddetectinginterchainentanglement AT enzoorlandini physicallinksdefininganddetectinginterchainentanglement
_version_	1718389011442040832

Physical Links: defining and detecting inter-chain entanglement

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