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| in 2018 cornell researchers built a | |
| high-powered detector that in combination | |
| with an algorithm-driven process called | |
| ptychography set a world record by tripling | |
| the resolution of a state-of-the-art electron | |
| microscope as successful as it was that approach | |
| had a weakness it only worked with ultrathin | |
| samples that were a few atoms thick anything | |
| thicker would cause the electrons to scatter | |
| in ways that could not be disentangled now a | |
| team again led by | |
| david muller | |
| the samuel beckert professor of engineering | |
| has bested its own | |
| record by a factor of two with an electron | |
| microscope pixel array detector empad that | |
| incorporates even more sophisticated 3d | |
| reconstruction algorithms the resolution is so | |
| fine-tuned the only blurring that remains is | |
| the thermal jiggling of the atoms themselves | |