4 ms·
How to put 170 atoms in an atom
- simonebrunozzi 2mo agoThe article, rather shallow, is about Bose-Einstein Condensate (BEC). I found it a bit more interesting that the author's middle name is Galileo, and that he is participating in a "blogging" residency [0]: Inkhaven residency: A 30 day residency for you to grow as a writer. For one month, you'll publish a blogpost every day. Or pack your bags. [0]: https://www.inkhaven.blog/ https://www.inkhaven.blog/
- Signore_Galilei 2mo agoHey! That's me, yep. It's a combination of a BEC and a Rydberg atom called "Rydberg polaron". This isn't the scientifically deepest article I've written, but if you want to read a more detailed description, feel free to check out the sources at the bottom. Since the end of the 30 day residency in November, I and a few other participants have been posting weekly, so I've got a decent back catalogue and there will be more to come!
- scythe 2mo agoNot only Bose-Einstein condensate, which is a textbook topic in condensed-matter physics, but also Rydberg atoms, which are a very weird phenomenon that has been mostly studied recently as a sort of edge-case where quantum physics starts to look like classical physics.
- Razengan 2mo agoI wish there were some similar "communes" for gamedevs who only make engines :')
- tromp 2mo ago> So in 2018, an international team of scientists created a BEC out of strontium atoms, and hit one of those atoms with a carefully tuned laser, exciting its outermost electron and turning it into a Rydberg atom. Several other atoms from the BEC were caught within between that outer electron’s inflated orbital. This is not so much putting 170 atoms in one, but inflating one beyond the size of its 170-atom neighbourhood. The hard part being to cool the neighbourhood to such an extremely low temperature that the inflated atom doesn't ionize.
- robocat 2mo agoIsn't there some hand-waving going on here? The outer orbital is being treated as the last layer of an onion and the atoms are "inside" that. But orbitals are not spherical so our geometrical intuitions kinda fail. Edit: Sorry for unclear wording: well, s-orbitals are spherical overlapping probability clouds, but they are not shells like an onion. Nor are they spheres as we commonly think of the geometrical object. To say something is "inside" a probability cloud gets difficult. Disclaimer: my memory/understanding of physics/chemistry/probability is poor. Edit 2: when orbitals of atoms overlap for molecules, don't the orbitals get funkier shaped probability distributions? Surely the same thing happens here and the cloud shapes would change - orbitals are not independent things you can just smoosh together or overlap willy-nilly due to qwuantum blah blah.
- yieldcrv 2mo agoNot spherical huh, where did you learn that and where would I go to learn that
- timcobb 2mo agoLook up "molecular orbitals" should be enough of a search to get the info
- zulux 2mo agoThat's the Bohr model. It works surprisingly well for hydrogen. Then there's the probability-cloud model, which works much better. And then there's the “strictly speaking, the orbital isn't actually a probability distribution at all; it's a wavefunction, Ψ, and ∣Ψ∣^2 gives you the probability density” model. It gets weird. Like, maybe-there's-only-one-electron-in-the-universe weird.
- nathan_compton 2mo agoLarge orbitals like this approach the classical limit, I believe.
- robocat 2mo ago
- robthebrew 2mo agoAs someone who did blue sky chemistry research decades ago: is this completely pointless?
- criddell 2mo agoHow could anybody really know? You might need to travel pretty far into the future to say for sure.
- pbhjpbhj 2mo agoFrom a position of naivety, anything relating to electron dissociation sounds potentially useful for nano-components to use for computation, or for superconductivity?
- thehappypm 2mo agoHonestly, no. These weird states of matter have extremely different properties to ordinary matter. Weird properties is how we get things like superconductors, magnets, semiconductors, photovoltaics.. so strange state of matter with weird properties could very well produce some magic
- GTP 2mo agoGreat way of saving space at home :)
- hinkley 2mo agoOne of my sci-fi future ideas, every time I hear about someone thinking of a new way to make warp drives, is that if we ever sort it out someone will make TARDISes for the filthy rich - a static warp bubble that moves space into a ground floor closet or room from space in an upstairs or in the attic. Like a milder version of the gimmick in Ultraviolet.
- Razengan 2mo agoAre we getting closer to sophons?
- kadushka 2mo agoThe article is well-written, and is very clear, thank you!
- andai 2mo agoPoor atoms. They froze them to absolute zero, of course they're going to huddle together!
- laxpri 2mo agoI am here to just appreciate the article how clear it is .
- laxpri 2mo agoas a naive , it is non-intuitive for me how the lower bound is 0 kelvin, is this the temp where things truly stops oscillating (quantum level) or we just dont care .
- pixl97 2mo agoAll fields have a zero point energy/ground state energy they cannot go below. So, no they won't stop. The Heidelberg uncertainty principle also disallowes zero momentum and a fixed position.
- farhanhubble 2mo agoDoes this type of atomic engineering have the potential for creating new types of materials, like polymers?
- JoeAltmaier 2mo agoWait - if the 170 atoms are a Bose-Einstein Condensate, then they are really just one atom. That's the whole deal with Condensates.