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Leica EM ACE900 Coating-Etching-Fracturing

Brief Introduction to Freeze Fracture and Etching

Freeze fracture describes the technique of breaking a frozen specimen to reveal internal structures. Freeze etching is the sublimation of surface ice under vacuum to reveal details of the fractured face that were originally hidden. A metal/carbon mix enables the sample to be imaged in a SEM (block-face) or TEM (replica). It is used to investigate for instance cell organelles, membranes, layers and emulsions.

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Brief Introduction to Coating Technology for Electron Microscopy

Coating of samples is required in the field of electron microscopy to enable or improve the imaging of samples. Creating a conductive layer of metal on the sample inhibits charging, reduces thermal damage and improves the secondary electron signal required for topographic examination in the SEM.

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