Ricard Alert Zenón

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Ricard Alert Zenón

Ricard Alert Zenón

@RicardAlert

Research Group Leader at @mpi_pks and @csbdresden. Previously @HFSP postdoc @Princeton, and PhD @FisicaUB. Biophysics theory and active matter physics.

Dresden, Germany Katılım Eylül 2019
567 Takip Edilen1.9K Takipçiler
Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
Check our new paper @PhysRevE showing how spatial variability in growth affects the buckling transition! Useful way for tissues to control buckling just by localizing growth. With Rahul G. Ramachandran and @lepuslapis @mpi_pks. See Pierre's thread below! journals.aps.org/pre/abstract/1…
Pierre Haas@lepuslapis

It's great to see this now published @PhysRevE! doi.org/10.1103/PhysRe… See below for a thread summarising the preprint - but of course you should read the paper for some solid mechanics...

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Ricard Alert Zenón retweetledi
Physical Review E
Physical Review E@PhysRevE·
Analytical calculations and numerical sampling reveals the effects of spatially disordered growth on buckling instability of elastic rods, showing how biological systems could trigger or avoid buckling and thereby control a key driver of morphogenesis. 🔗 go.aps.org/4f6C2xr
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Datta Lab
Datta Lab@TheSquishyLab·
Thank you to @softmatter for this recognition! It reflects the collective efforts of the incredible students, postdocs, and colleagues I've been lucky to interact with. I enjoyed describing some of the intellectual directions we're excited about in the interview linked below ⬇️.
Soft Matter@softmatter

We're delighted to announce the 2024 Soft Matter lectureship has been awarded to Prof Sujit Datta (@TheSquishyLab) Find out more about Sujit on our blog - blogs.rsc.org/sm/2024/10/23/… Read work from Sujit & previous winners for free until 30 Nov! - pubs.rsc.org/en/journals/ar…

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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
New preprint! We introduce active screws: a new class of active particles that propel by spinning on a substrate. There are several examples: from from gliding microtubules to soil bacteria, and even magnetically-driven colloidal helices. arxiv.org/abs/2410.12263…
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
This was work with Debarghya Banerjee, which we started when he was @mpi_pks. If you know of other examples of active screws, or you wonder about their collective behavior, please let me know!
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
We found that there are small chiral flows around topological defects, with a chiral activity about an order of magnitude smaller than the achiral one. Could slow rolling motion of the cells explain it?
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
If the screws also roll sideways, they produce chiral active stresses. So, rolling is a mechanism whereby the chirality of individual constituents can give rise to collective chiral effects.
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
We propose a microscopic model for active screws and we coarse-grain it. We show that a collective of active screws behaves like an active nematic.
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
In other types of active chiral particles, the axis of rotation and propulsion are different. In active screws, the axis of rotation and propulsion are the same.
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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
📢 The call for distinguished @mpi_pks fellows is open! We provide excellent 3-year postdoc positions that allow full independence to outstanding candidates. Please apply!
MPI-PKS Dresden@mpi_pks

Opening for a Distinguished Postdoctoral Fellow @mpi_pks ! This is an independent Fellowship with free choice of research topics and individual appearance on our research page pks.mpg.de/research/divis… , apply by 15 November: pks.mpg.de/visitors-progr…

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Ricard Alert Zenón
Ricard Alert Zenón@RicardAlert·
👉News piece about our recent work @NaturePhysics on cell trains! @LeoneRossetti in @XavierTrepat's lab generated leader cells with light. We used these experiments to develop a model for how asymmetries in traction forces drive collective cell migration.
Parc Científic de Barcelona@PCB_UB

#PCBCommunity | A team led by @IBECBarcelona has studied the migratory movement of cells using light control. ➡️Results show there is no leader cell directing the collective movement, as believed so far, but that all cells participate in the process. 📝@NaturePhysics @XavierTrepat @UniBarcelona @CampusClinicUB #IBEC #ICREA @CIBERBBN @LeoneRossetti #MSCA @KingsCollegeLon @RicardAlert @mpi_pks @csbdresden To learn more ➡️ bit.ly/3TxAZxH

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Keşfet

@PhysRevE @lepuslapis @mpi_pks @murozmar @NatureCellBio @BUmechanobio @BioDesignCenter @wyssinstitute