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Matter & Energy

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radiation sign

WRITING ON THE WALL A new type of radiation detection could make it much harder to keep radioactive material under wraps.  

Majorana fermions in a topological insulator

MAJORANAS IN MOTION  Majorana fermions (blue, red, and purple lines) travel through a topological insulator (horizontal bar) with a superconductor layered on top in this illustration of new experiments to detect the fermions. Green lines indicate electrons travelling on the edges of the topological insulator.

Maxwell’s Demon illustration

ORDER FROM DISORDER  Maxwell’s Demon (illustrated above) is a hypothetical creature that could illegally decrease entropy, or disorder, by separating faster molecules (blue) from slower ones (green) within a box of gas. Scientist have probed this demon’s memory for the first time.

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