@CostEutopia

European TOPology Interdisciplinary Action

Joined July 2020
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  • Followers194
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📣 Call for #STSMs is open! Fist call from today (Nov. 8) to Nov 12 plus second call also from today to Dec 9. Find out more at eutopia.unitn.eu/first-stsms… @COSTprogramme
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Very happy to see this work out! We propose a way to realize simple knots with high yield at the nano- and micro-scales using tangential activity and a diblock copolymer architecture. Work done at @DFAUnipd
Physical Review Letters@PhysRevLett24 Apr 2025
Polymers containing self-propelled monomers spontaneously form knots at much shorter lengths than in the purely passive case go.aps.org/4lQ6oIo Synopsis: go.aps.org/44Cwc4s

Upsurge of Spontaneous Knotting in Polar Diblock Active Polymers

Simulations show that polymers that include inert and self-propelled components are more likely to form and retain knots, with possible applications in materials engineering.

journals.aps.org
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Polymers containing self-propelled monomers spontaneously form knots at much shorter lengths than in the purely passive case go.aps.org/4lQ6oIo Synopsis: go.aps.org/44Cwc4s

Upsurge of Spontaneous Knotting in Polar Diblock Active Polymers

Simulations show that polymers that include inert and self-propelled components are more likely to form and retain knots, with possible applications in materials engineering.

journals.aps.org
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Volume 134, Issue 16 journals.aps.org/prl/issues/… Cover: Knot formation, migration, and dissolution in polar active diblock copolymers journals.aps.org/prl/issues/…
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For those few still on X who may care about this. "Kinetoplast DNA: a polymer physicist’s topological Olympic dream" out in @NAR_Open @AlexanderRKlotz @LucaTubiana academic.oup.com/nar/advance…

Kinetoplast DNA: a polymer physicist’s topological Olympic dream

Abstract. All life forms are miraculous, but some are more inexplicable than others. Trypanosomes are by far one of the most puzzling organisms on Earth: t

academic.oup.com
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📢📢📢 Paper alert! 📢📢📢 Our latest effort is out! "Molecular Dynamics Characterization of the Free and Encapsidated RNA2 of CCMV with the oxRNA Model", by G. Mattiotti, M. Micheloni, L. Petrolli, L. Rovigatti, L. Tubiana, S. Pasquali, R. Potestio onlinelibrary.wiley.com/doi/…
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DNA plectonemes are intertwined loops which form when a single DNA molecule is stretched and twisted. Plectonemes are found in bacterial and eukaryotic cells and play important role in several biochemical processes as gene expression etc... 1/5 arxiv.org/abs/2410.23145

Statistical Mechanics of Multiplectoneme Phases in DNA

A stretched DNA molecule which is also under- or overwound, undergoes a buckling transition forming intertwined looped domains called plectonemes. Here we develop a simple theory that extends the...

arxiv.org
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Supramolecular luminescent materials based on macrocyclic arenes
Chinese Chemical Letters@ChinChemLett3 Nov 2024
Supramolecular luminescent materials based on macrocyclic arenes @ELSchemistry @TADF_papers doi.org/10.1016/j.cclet.2024…
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#OnTheCover Cascading Macrocycle and Helix Motions in a Foldarotaxane Molecular Shuttle (Frederic Coutrot and co-workers) onlinelibrary.wiley.com/doi/… onlinelibrary.wiley.com/doi/…
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EutopiaCOST retweeted
Mark Leake@BPSIYork25 Oct 2024
Really enjoying this, involving @Dmichiel1 and friends - fyi, for those interested in soft matter polymer topology, this new single molecule tool could really help probe knots in DNA nature.com/articles/s41467-0…

Correlating fluorescence microscopy, optical and magnetic tweezers to study single chiral biopoly...

Nature Communications - It is hard to correlate force, torque and localization information. The authors report Combined Optical and Magnetic BIomolecule TWEEZers, COMBI-Tweez, that integrates...

nature.com
EutopiaCOST@CostEutopia24 Oct 2024
Reminder! Join the seminar tomorrow at 14:00 (2pm) CET!
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Reminder! Join the seminar tomorrow at 14:00 (2pm) CET!
Luca Tubiana @[email protected]@LucaTubiana16 Oct 2024
Very happy to be invited by Physics Report to give a Cassyni webinar on our recent review! An introduction to Topology in soft and biological matter presented by @LucaTubiana & others (see 🧵) 📅 Friday 25th Oct 2024 ⏰ 14.00 PM (Europe/Amsterdam) cassyni.com/events/W7MZqG1ze…

An introduction to Topology in soft and biological matter

The last years have witnessed remarkable advances in our understanding of the emergence and consequences of topological constraints in biological and soft matter. Examples are abundant in relation to...

cassyni.com
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Flow in Topology is now (finally) online @Chem_CP! Lovely collaboration with @AnnaGSlater. Functional materials and devices based on knots and links are now realistic targets without worrying about the large scale synthesis! authors.elsevier.com/a/1jzSR…
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Very happy to be invited by Physics Report to give a Cassyni webinar on our recent review! An introduction to Topology in soft and biological matter presented by @LucaTubiana & others (see 🧵) 📅 Friday 25th Oct 2024 ⏰ 14.00 PM (Europe/Amsterdam) cassyni.com/events/W7MZqG1ze…

An introduction to Topology in soft and biological matter

The last years have witnessed remarkable advances in our understanding of the emergence and consequences of topological constraints in biological and soft matter. Examples are abundant in relation to...

cassyni.com
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I am happy to share that the last work from my PhD time is out: Universal Time and Length Scales of Polar Active Polymer Melts pubs.acs.org/doi/10.1021/acs…

Universal Time and Length Scales of Polar Active Polymer Melts

Abstract. We present an in-depth multiscale analysis of the conformations and dynamics of polar active polymers, comparing very dilute and very dense condi

pubs.acs.org
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🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢 Knots on the cover of @PhysicsWorld 🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢🪢 physicsworld.com/p/magazine/…
Davide Michieletto@Dmichiel113 Aug 2024
#Knots people🪢🪢🪢🪢 Can you spot the knot? AI can! ...with 99.9% accuracy Featuring the work of @doyoudydx and @fconforto1 standing on the shoulder of Thomson, Maxwell and Tait. physicsworld.com/a/spot-the-…

Spot the knot: using AI to untangle the topology of molecules – Physics World

Solving a centuries-old mathematical puzzle could hold the key to understanding the function of many of the molecules of life

physicsworld.com
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Mechanically Interlocked Polyrotaxane Networks with Collective Motions of Multiple Main-Chain Mechanical Bonds (Xuzhou Yan and co-workers) #AngewandteVIP @sjtu1896 onlinelibrary.wiley.com/doi/…

Mechanically Interlocked Polyrotaxane Networks with Collective Motions of Multiple Main‐Chain...

The relationship between the microscopic collective motion of mechanical bonds in Type-II main-chain polyrotaxane (PR) backbones and the macroscopic mechanical performance of the resulting PR-based...

onlinelibrary.wiley.com
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NEW DNA KNOT NANOPORE STUDY ALERT! arxiv.org/abs/2407.11567
Simulated DNA knot getting unzipped

ALT Simulated DNA knot getting unzipped

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Glass Formation in Ring Polymer Melts Having Variable Knot Complexity and Molecular Mass pubs.acs.org/doi/10.1021/acs…

Glass Formation in Ring Polymer Melts Having Variable Knot Complexity and Molecular Mass

Abstract. The variation of polymer topology provides an alternative way to tune the properties of polymer materials without varying the chemistry of the mo

pubs.acs.org
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Lego torus knot 4/3 "hands-on" doubly curved surfaces with a developable strip #lego #mathfun #torus #knot #Geometry #legosculptur
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Microswimmers Knead Nematics into Cholesterics journals.aps.org/prl/abstrac…

Microswimmers Knead Nematics into Cholesterics

The hydrodynamic stresses created by active particles can destabilize orientational order present in the system. This is manifested, for example, by the appearance of a bend instability in active...

journals.aps.org
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