Research Papers Electron Microscopy

Research Papers Electron Microscopy-27
Creating these thin sections for biological and materials specimens is technically very challenging.Semiconductor thin sections can be made using a focused ion beam.

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The advantages of electron diffraction over X-ray crystallography are that the specimen need not be a single crystal or even a polycrystalline powder, and also that the Fourier transform reconstruction of the object's magnified structure occurs physically and thus avoids the need for solving the phase problem faced by the X-ray crystallographers after obtaining their X-ray diffraction patterns.

One major disadvantage of the transmission electron microscope is the need for extremely thin sections of the specimens, typically about 100 nanometers.

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Modern electron microscopes produce electron micrographs using specialized digital cameras and frame grabbers to capture the images.

In 1926 Hans Busch developed the electromagnetic lens.

An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination.

As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects.


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