RT @gelfring
This is a fun one. Using a simple model, we derive a Snell-type law for the scattering of microswimmers (active particles) in fluids with sharp changes in viscosity.
The puzzle that keeps on giving😜 reminds me of https://doi.org/10.1098/rstb.2019.0566 when the authors ended with: 'a saying attributed to Alfonso X of Castile, ‘el sabio’: ‘If the Lord Almighty had consulted me before embarking on creation thus, I should have recommended something simpler’.
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RT @Barr_lab
WOW! Polycystins on #extracellularvesicles for L-R determination!!!! 🤯🤯🤯
Leftward transfer of a chemosensory polycystin initiates l…
https://twitter.com/Barr_lab/status/1613897703041163264
Kirsty Wan
boosted
The little #worms in this movie that you see #crawling about are actually tracks outlining the motion of microscopic #algae. Some move fast and have wormy red (fast!) lines, some move slow and have stumpy blue (slow) lines. I've got nothing on @micromotility, but I absolutely enjoy making movies of algae swimming around and thinking about what is causing them to move a particular way!
RT @daikinish
Our paper is published!
How do bacteria swim and interact with obstacles in a narrow space sandwiched between two no-slip boundaries?
We found enhanced hydrodynamic interactions in such a quasi-2D setup.
https://journals.aps.org/pre/abstract/10.1103/PhysRevE.107.014602
very interesting question... #activematter
I reckon that to qualify as a micro/nanorobot the agent should have something beyond just motility - for example a minimal cognition (loosely defined, e.g. phototaxis), though in the literature the term has been used for much less?!
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RT @LauraAlvarez_F
I would like to throw out a (controversial?) question over here targeting active matter peers, other field scientists, and also the gener…
https://twitter.com/LauraAlvarez_F/status/1613129343357657088
RT @PhysicsNews
As Katharine Birbalsingh steps down as the government social mobility tsar, a thread on girls, physics & the devastating effect of stereotypes.
Girls are not put off physics because of "hard maths" (girls got more top grades than boys in A level maths in 2021 & 2022). Instead,
RT @gallina_ciega
The brain is over rated https://twitter.com/WallStreetSilv/status/1611694141687177217
which is why, sometimes I tell my students to just do the experiment without forming a hypothesis😅 (srsly)
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RT @CSULBMammalLab
Unfortunately, one of the first things you learn when doing animal behavior research is that the animals don't care what your hypothesis is. #mentorship
https://twitter.com/CSULBMammalLab/status/1611377901152374784
RT @takanobu_ka
“Immotile cilia mechanically sense the direction of fluid flow for left-right determination” published in #Science #AAAS. We answered the question that "How the embryo senses nodal flow and why only the L-side cilia can respond." Let me guide you! 1/n https://www.science.org/doi/10.1126/science.abq8148
RT @cell_club
Cilia function as calcium-mediated mechanosensors that instruct left-right asymmetry https://www.science.org/doi/10.1126/science.abq7317#.Y7c3ZD2oiSQ.twitter
RT @AlgaeBase
A diatom mural suddenly appeared on the gable end of a house in Galway Cit y. Wonderful.
RT @Jameshearsawho
Came back into work this morning to find this intriguing Dorito-shaped contamination on one of my soft agar plates (.25% LB agar). Amazing how the cells have formed such an angular structure, although I’ve no idea what it is! @ContamClub
Beautiful ciliary carpet...
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RT @CalamityJanie
Mesmerising wave grass on the hills of Bologna • Italy 🎞 by @DorianPellumbi
https://twitter.com/CalamityJanie/status/1532344450617573376
Well who knew cats can do #phototaxis (well really photokinesis) too 😅
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RT @gunsnrosesgirl3
In this time-lapse video by Mitsuru Yasui
You can see many cats following a sun beam to nap
https://twitter.com/gunsnrosesgirl3/status/1610722970326175745
Kirsty Wan
boosted
x·posting from twitter
Today in ingenious historical experiments: Theodor Engelmann demonstrated that chloroplasts are the site of oxygen production in plants by taking bacteria that would migrate towards oxygen and seeing that they went to the choloroplast
(from Howard Berg's "E coli in Motion")
RT @PhysRevResearch
Motility and self-organization of gliding Chlamydomonas populations, Sebastian Till, Florian Ebmeier, Alexandros A. Fragkopoulos, Marco G. Mazza, and Oliver Bäumchen @afragkopoulos @unibt @MarcoGMazza @mazza_lab @mpids @LboroScience #SoftMatter #Biophysics https://go.aps.org/3ji63lK
Kirsty Wan
boosted
The revised version of our paper on the desmosomal #connectome of the #Platynereis larva is now out
https://elifesciences.org/articles/71231
by Sanja Jasek et al.
#volumeEM #rstat
