Researchers made an egg-roll-shaped capillary tube with inclined microplates. Liquids move directionally based on contact angles, opening new ways to control fluids in microchannels.
🔗 https://pubs.aip.org/aip/pof/article/38/3/032004/3381856/A-curled-open-capillary-tube-for-selective
#Microfluidics #Capillarity #LiquidTransport #SurfaceScience #PhysicsOfFluids
Droplets on heated, textured surfaces – how do they move?
Vahid Taheri (DC#5) joins #LeidenForce to study how surface microstructures control droplet dynamics and the Leidenfrost temperature.
With Prof. Maria Fernandino (NTNU), @airbus & Université de Lille
🔗 Read more: https://shorturl.at/bNu4x
By combining high-resolution electrostatic mapping with molecular dynamics simulations, we investigated the behavior of these surface-trapped ionic charges. We found that they spread across the surface with remarkable mobility. Their two-dimensional diffusion exceeds that of ions in bulk water, with the limiting factor being the friction between the ionic solvation shell and the solid.
https://www.pnas.org/doi/10.1073/pnas.2505841122
#PNAS #MolecularDynamics #SurfaceScience #PhysicalChemistry#ComputationalChemistry
In happier news: I'm running XPS by myself today (!). Doing sputter depth profiles and everything, sans assistance. It's terrifying and exhilarating all at the same time.
Grinding glass to a fine powder in a mortar and pestle like any other Tuesday...
What, you don't do that?
COLLABORATOR: Hey, I just got my TOF-SIMS data back, and I saw a lot of sodium, so we probably want to be careful as we go forward with our synthesis.
ME: Oh, uh, how much are we talking? TOF-SIMS is very sensitive to sodium, and it's not really a quantitative technique...
COLLABORATOR: Oh. Wait. Really?
They showed me their data, we talked about it, and it left me feeling warm and fuzzy. It's not all strife today. :D
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haf, blurst of her name