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Ricard Alert Zenón

@RicardAlert

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

Dresden, Germany
Joined September 2019
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@RicardAlert
Ricard Alert Zenón
8 months
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!.
@lepuslapis
Pierre Haas
8 months
It's great to see this now published @PhysRevE!.See below for a thread summarising the preprint - but of course you should read the paper for some solid mechanics. .
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@RicardAlert
Ricard Alert Zenón
8 months
RT @PhysRevE: Analytical calculations and numerical sampling reveals the effects of spatially disordered growth on buckling instability of….
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@RicardAlert
Ricard Alert Zenón
8 months
Check out this opportunity for summer internships in biological physics! Please apply before Dec. 9th to work for 3 months with one of the groups @mpi_pks.
@lepuslapis
Pierre Haas
8 months
Fully funded summer #internships in #biophysics @mpi_pks in Dresden - apply now to join our group (or the groups of @RicardAlert, @c_kurzthaler, @mpopov1c, or Frank Jülicher) over the summer of 2025! . Deadline: 9th of December, 2024.
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@RicardAlert
Ricard Alert Zenón
9 months
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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@RicardAlert
Ricard Alert Zenón
9 months
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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@RicardAlert
Ricard Alert Zenón
9 months
We analyzed data from our previous work with @KSCopenhagen, Ned Wingreen, and @shaevitz on colonies of M. xanthus.
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@RicardAlert
Ricard Alert Zenón
9 months
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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@RicardAlert
Ricard Alert Zenón
9 months
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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@RicardAlert
Ricard Alert Zenón
9 months
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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@RicardAlert
Ricard Alert Zenón
9 months
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.
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@RicardAlert
Ricard Alert Zenón
9 months
📢 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
MPI-PKS Dresden
9 months
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 , apply by 15 November:.
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@RicardAlert
Ricard Alert Zenón
9 months
RT @mpi_pks: Cells move in groups often led by specialised leader cells. Work @NaturePhysics by @RicardAlert @mpi_pks & collaborators shows….
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@RicardAlert
Ricard Alert Zenón
10 months
RT @UniBarcelona: #RecercaUB | 🦠 Un estudi demostra que en el moviment col·lectiu cel·lular hi participen totes les cèl·lules, sense cèl·lu….
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@RicardAlert
Ricard Alert Zenón
10 months
Original paper here:
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@RicardAlert
Ricard Alert Zenón
10 months
👉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.
@PCB_UB
Parc Científic de Barcelona
10 months
#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
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@RicardAlert
Ricard Alert Zenón
10 months
RT @marionamec: 🪇Nou vídeo! Aquest cop faig ressò d'una notícia científica:.Han trobat com fer la pell transparent amb el pigment dels Dori….
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@RicardAlert
Ricard Alert Zenón
10 months
📢 IgNobel prize for active matter! The physics of drunk worms! 🪱.
@IoP_UvA
Institute of Physics
10 months
Congratulations to Daniel Bonn, Antoine Deblais, Tess Heeremans and Sander Woutersen! They won an Ig Nobel prize for their research in which they investigate the behaviour of drunk worms as a particular form of active matter.
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@RicardAlert
Ricard Alert Zenón
10 months
RT @marionamec: 🐜Ho pots saber tot d'una formiga, però això no t'ajuda a saber com és un formiguer. 🚘Entendre un motor no t'ajuda a enten….
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@RicardAlert
Ricard Alert Zenón
10 months
RT @maxplanckpress: Calling all emerging scientists - it’s time to send us an application! 😉😎 Lead your own #MaxPlanck Research Group w/ €2….
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@RicardAlert
Ricard Alert Zenón
10 months
RT @marionamec: 😸La història d' F. D. C. Willard, el primer gat en publicar un article científic! D'això en vaig parlar amb la @noemipolls….
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