Cooling is rarely steady. Experiments show how heat transfer changes dynamically during rapid temperature drops.
These transient effects matter for boiling regimes and could help refine models of vapor layer formation.
#heattransfer #phasechange #leidenfrosteffect #thermodynamics #physics
Inside Solidification
As children, weâre taught that there are three distinct phases of matterâsolid, liquid, and gasâbut the reality is somewhat more complicated. In the rightâoften exoticâconditions, there are far more phases matter takes on. In a recent study, researchers described a metal that sits somewhere between a liquid and a solid.
In a liquid, atoms are free to move. During solidification, atoms lose this freedom, and their frozen positions relative to one another determine the solidâs properties. Atoms frozen into orderly patterns form crystals, whereas those frozen haphazardly become amorphous solids. In their experiment, researchers instead observed atoms in liquid metal nanoparticles that remained stationary throughout the transition from liquid to solid. The number and position of stationary atoms affected whether the final solid crystallized or not.
By tracking these stationary atoms and their influence, the team hopes to better control the material properties of the final solidified metal. (Image credit: U. of Nottingham; research credit: C. Leist et al.; via Gizmodo)
#amorphousSolid #fluidDynamics #materialScience #phaseChange #physics #science #solidification
Great moments at #Euromech Colloquium 651 in Metz with LeidenForce members!
In the photo: @stephanedorbolo @UniversitedeLiege, cochair, and Benoit Scheid @ULBruxelles presenting on âBubble and droplet dynamics in inertial microfluidicsâ.
Also Anne-Laure Biance @cnrs with a talk on âTriboelectricity in droplet impact on superhydrophobic surfaces.â
Phase change memory is a type of nonvolatile memory that utilizes the capability of phase change materials (PCM) to transition between an amorphous state, where atoms are scattered, and a crystalline state, where atoms are closely aligned. This change produces a reversible electrical property that c
I made a short about my phase change materials cooling vest!
What is the connection between fractal geometry and systems at a critical point undergoing phase transition? This is one of the more useful ideas that has emerged from the study of dynamical systems, but often it's buried too deep into the study of modeling for most people to encounter it-- then it gets explained badly in pop-science books.
At last here is a video that will set you right:
https://www.youtube.com/watch?v=vwLb3XlPCB4
#dynamicalsystems #mathematics #videos #phasechange #simulations #chaos
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