Ernst Ruska
Ernst Ruska
main contribution
Pioneer in the development of electron microscopes, he won the 1986 Nobel Prize in Physics for his work related to electron optics and the design of the first electron microscope. The short wavelength of
Biographical or institutional source material ↗’s relevance in technology cases
The following cases cite their theories, methods or industry contributions; the historical basis does not mean that I directly participated in or invented modern products alone.
JEOL JEM-F200 field emission transmission electron microscope Interdisciplinary principle illustration of ↗
electrons enables high spatial resolution, but lens aberration, sample thickness, beam damage, and contrast transfer collectively limit the interpretable information.
Thermo Scientific Helios 5 DualBeam ↗
The ion beam can locally remove material, and the electron beam forms the imaging signal; surface damage, redeposition, and geometric effects need to be considered in sample preparation and interpretation.
Thermo Scientific Krios Cryo-EM ↗
Vitrified preservation reduces structural changes caused by drying; multiple low signal-to-noise ratio projections are aligned, classified and reconstructed to recover three-dimensional information. The resolution is determined by the sample, imaging and calculation.