Achieving sub-0.5-angstrom-resolution ptychography in an uncorrected electron microscope. (https://pubmed.ncbi.nlm.nih.gov/38386746/)

These scientists found a new way to see really tiny things, like atoms, using a special type of microscope called a scanning transmission electron microscope (STEM). Normally, to see things that small, scientists need to use a very expensive microscope that corrects any mistakes in the images it takes. But these scientists figured out a way to get super clear images without needing that expensive correction.

They used a technique called electron ptychography, which allows them to see things with incredible detail. They tested this technique on flat materials that are twisted in a certain way, and they were able to see details as small as 0.44 angstroms. This is much smaller than what other microscopes can usually see.

The scientists also discovered that they could use special beams of electrons to make their images even clearer and use less energy. This means they can see tiny things better without needing to spend a lot of money on fancy equipment. Overall, their study showed that they can now see things at a level of detail that was not possible before, using a more affordable microscope.

Nguyen KX., Jiang Y., Lee CH., Kharel P., Zhang Y., van der Zande AM., Huang PY. Achieving sub-0.5-angstrom-resolution ptychography in an uncorrected electron microscope. Science. 2024 Feb 23;383(6685):865-870. doi: 10.1126/science.adl2029. Epub 2024 Feb 22.