Modern-day electronics or communication technology would not exist without electron microscopy, and the same can be said for many other types of technology. Beyond imaging, the focused beam of electrons is also used for analysis of the chemical composition, the crystal structure, and many other useful things. In new work, researchers have proposed to use graphene as a two-dimensional vacuum chamber, and build a two-dimensional electron microscope, where the electrons fly from the electron gun to the target without ever leaving the graphene sheet.

Via:: http://www.nanowerk.com/spotlight/spotid=47010.php

A two-dimensional electron microscope inside graphene

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