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What scope was it?
Ntegra Spectra http://www.ntmdt.com/device/ntegra-spectra
Wow. 14 nm is impressive.
They must be taking advantage of various sub-diffraction "cheats", similar to what is used with confocal microscopy to break the optical resolution limit, for example. OP, you should post the article that makes the claim, at least.
Here is a recent article that uses AFM in conjunction with Raman Spectroscopy, they claim resolution all the way down to 2-10 nm by adjusting the angle of incidence of the excitation field.
Dear Lena, hope that will help a lille http://www.nanopaprika.eu/profiles/blogs/nt-mdt-invites-everyone-to...