Plasmonics, Bandgap, Dielectric Function, and Chemical State Analysis Using High Energy Resolution Monochromated EELS

Home » Plasmonics, Bandgap, Dielectric Function, and Chemical State Analysis Using High Energy Resolution Monochromated EELS

Electron Energy Loss Spectroscopy (EELS) is a powerful technique for probing chemical composition at high spatial resolution. Beyond elemental detection, EELS provides access to chemical bonding, bandgap, dielectric properties, and plasmonic behavior. However, the ability to extract this information is often limited by the ~1 eV energy spread of a standard field emission TEM source.

A monochromator narrows the energy spread of the electron beam by filtering and selecting only a small portion of emitted electrons. This dramatically improves energy resolution and enables analysis that is otherwise inaccessible.

This application note highlights Eurofins EAG’s advanced monochromated EELS capabilities, including bandgap measurement, dielectric function extraction, plasmonic mode characterization, and high precision ELNES chemical state analysis.

Download the application note to learn more.

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