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Ram (he/him)

@ramsudhirsharma.bsky.social
62 followers 95 following 1 posts

sticky grains | phd student, UCSB mech e | formerly: Clark Univ physics (@KudrolliLab) & philosophy, @muwci | 🇮🇳 🇺🇸

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Reposted by Ram (he/him)
Kavli Institute for Theoretical Physics @kitp-ucsb.bsky.social · 24/02/2026
Watch the latest #KITP Blackboard Lunch talk by Karen Daniels (NC State) — Rigidity (or not) on the Earth's surface and beyond
youtu.be
Rigidity (or not) on the Earth's surface and beyond | Karen Daniels (NC State)
The purpose of these Blackboard Talk lunches is for the science of one program to be explained to the other KITP program participants. These talks lead to cross program communications that work…
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Alban Sauret @albansauret.bsky.social · 18/02/2026
Our new paper, led by @ramsudhirsharma.bsky.social (with Alexandre Leonelli, Kevin Zhao, Eckart Meiburg), has been published in @apsphysics.bsky.social PRL. We revisit hourglasses/silos and ask what really sets the discharge rate. See more here: doi.org/10.1103/3g2f-nslz
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Kavli Institute for Theoretical Physics @kitp-ucsb.bsky.social · 12/01/2026
Welcome to the Soft Earth Geophysics program at KITP! January 5 - March 26, 2026 Learn more: buff.ly/b5WkU3A #softearth26
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Alban Sauret @albansauret.bsky.social · 19/09/2025
Excited to share our new preprint on the discharge of granular materials from a silo. Led by @ramsudhirsharma.bsky.social , we went after a simple question: What is the flow rate through the opening? The answer turns out to be "simple" and quite general. See more here: arxiv.org/abs/2509.14415 [1/4]
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Karen Daniels @karenedaniels.bsky.social · 03/09/2025
We have a double-header out this week: two papers examining how the stress-force-fabric relation manifests in both annular shear (PRL doi.org/10.1103/gp8t...) and more varied loading conditions (PRE doi.org/10.1103/rv25...). The anisotropies in the contact forces set the response to loading, (1/3)
doi.org
Particle Scale Anisotropy Controls Bulk Properties in Sheared Granular Materials
The bulk dynamics of dense granular materials arise through a combination of particle-scale and mesoscale effects. Theoretical and numerical studies have shown that collective effects are created by p...
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Rachel Glade @rachelglade.bsky.social · 30/07/2025
I'm incredibly proud of PhD student Nacere Mohamed Samassi for submitting her first ever paper, as well as the first experimental paper from the DRIP lab! Check out the preprint here: eartharxiv.org/repository/v...
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Karen Daniels @karenedaniels.bsky.social · 28/07/2025
I had the pleasure of being a #Fulbright scholar in @granmech.bsky.social 's lab at IISc Bangalore last year, where grad student Abrar Naseer is doing photoelastic force measurements on bonded pairs of particles (my lab just does single ones!) Here's the first preprint: arxiv.org/abs/2507.19214
arxiv.org
Micromechanics of compressive and tensile forces in partially-bonded granular materials
In granular media, the presence of even small amounts of interparticle cohesion manifests as an increase in the bulk strength and stiffness, effects that are typically associated with an increase in t...
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Alban Sauret @albansauret.bsky.social · 03/04/2025
Our new study, led by Philippe Gondret and Cyprien Morize (FAST Laboratory), part of Wladimir Sarlin's PhD, has just been published in Journal of Fluid Mechanics. It explores how impulsive motions generate waves. doi.org/10.1017/jfm.... @univparissaclay.bsky.social @univofmaryland.bsky.social
doi.org
Nascent water waves induced by the impulsive motion of a solid wall | Journal of Fluid Mechanics | Cambridge Core
Nascent water waves induced by the impulsive motion of a solid wall - Volume 1008
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Ram (he/him) @ramsudhirsharma.bsky.social · 16/03/2025
Excited to present some recent work at march meeting, where we revisit the constant mass flux of particles through apertures! A simple framework, lots of experiments and some ideas on packing. Would love for you to stop by session MAR-M62 on Wed afternoon (3/19) :) #APSSummit25
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Alban Sauret @albansauret.bsky.social · 16/03/2025
Lineup from our group at the @APS Global Summit: We will be covering studies on fluids, grains, drops, and suspensions! More details below.
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Alban Sauret @albansauret.bsky.social · 12/03/2025
Excited to share our new paper in @pnas.org doi.org/10.1073/pnas...! Ice cubes often appear cloudy because, as water freezes, air bubbles get trapped and scatter light. But how does freezing rate affect the shape of the bubbles?
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Doug Jerolmack @dougjerolmack.bsky.social · 06/03/2025
It feels crappy to "brag" about a new paper while science is being dismantled. But in the spirit of #standupforscience i guess it's good for us to remember what we're doing this for.
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Alban Sauret @albansauret.bsky.social · 03/02/2025
Stickiness matters! From powder handling to geophysical flows, cohesion in granular material plays a crucial role. We review in Soft Matter @roysocchem.bsky.social experimental approaches to create and control inter-particle adhesion pubs.rsc.org/en/content/a...
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Doug Jerolmack @dougjerolmack.bsky.social · 28/01/2025
Science is resistance, and inclusion is warfare. We need to understand, organize, and operate on these principles now. 🧪
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KudrolliLab @kudrollilab.bsky.social · 07/01/2025
New preprint out on self-propelling melting ice blocks arxiv.org/abs/2412.16010. This work was led by Michael Berhanu and it was a pleasure to be a part off along with AmitDawadi at ClarkUniversity, and Martin Chaigne, and Jerome Jovet at University Paris Cite.
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Alain Goriely @alaingoriely.bsky.social · 26/11/2024
Hot off the press A super fun collaboration and paper. All you ever wanted about the squirting cucumber but never dared to ask. www.pnas.org/doi/10.1073/...
pnas.org
Uncovering the mechanical secrets of the squirting cucumber | PNAS
Rapid movement is rare in the plant kingdom, but a prerequisite for ballistic seed dispersal. A particularly dramatic example of rapid motion in pl...
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Alban Sauret @albansauret.bsky.social · 25/11/2024
If you are at the @apsphysics.bsky.social DFD meeting in SLC come join this morning to hear about a sticky problem: the clogging of suspensions! I will be giving an invited talk at 11:05 am in Hall 3, trying to share the work done by our group in this topic over the past few years
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Alban Sauret @albansauret.bsky.social · 23/11/2024
If you are into granular material, piles and how granular jets fall and impact on a surface, @ramsudhirsharma.bsky.social got you covered on Sunday morning!
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Alban Sauret @albansauret.bsky.social · 23/11/2024
Here is the lineup of talks from our group and collaborators for the @apsphysics.bsky.social DFD Meeting this year. More fluid dynamics, granular media, suspensions, and clogging coming!
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Alban Sauret @albansauret.bsky.social · 23/11/2024
Our video entry for the 2024 Gallery of Fluid Motion @apsphysics.bsky.social is now online! Some variations on Harold “Doc” Edgerton’s drop impact experiments youtu.be/xIITzWnnwYI?...
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