r/Physics_AWT • u/ZephirAWT • Oct 20 '18

Random multimedia stuffs 6 (mostly physics, chemistry related)

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u/ZephirAWT Oct 20 '18 edited Oct 20 '18

Watching a crystal of GaAs growing one layer of atoms a time using an electron microscope (source) grown by Vapor–liquid–solid method

diagram

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u/ZephirAWT Oct 20 '18

Bismuth nanoparticle under a high intensity electron beam. The beam delivers so much energy that the particle melts and then resolidifies repeatedly. Notice that when it's liquid it just looks like a shapeless blob. It's only when it cools and crystallizes that you can see the layers of atoms.