Nion Hermes MAC-STEM

The Low-voltage (60-100kV) monochromated, aberration-corrected (MAC)-STEM/EELS (Nion Hermes) is equipped with a Cold FEG and ultrahigh vacuum column and offers high energy-resolution EELS.

• Equipped with next generation 𝛼-monochromator and 5th Order Aberration-corrector  capable of cutting-edge energy resolution for low-loss EELS while retaining sub-Ångstrom spatial resolution
• 0.1 nm maximum spatial resolution (at 100 kV)
• Equipped with a stage that enables heating & biasing capabilities
• Liquid nitrogen cryogenic experiments
• Energy resolution better than 5 meV, excitations detectable at energies low as 15 meV (80 µm, 120 cm-1, 3.6 THz),     providing access to access to excitations such as phonons, molecular vibrations, and other mid-infrared quasiparticles.
• Aloof excitations capable of gently probing beam sensitive materials such as encapsulated liquids, amino acids, and whole-cell biological samples with nanoscale spatial resolution.
• Off-axis EELS acquisitions suppress delocalized aloof contributions to enable ultrahigh resolution analysis of ultralow energy excitations.
• Q-slit EELS aperture enables 0.5 Å-1 momentum-resolution while retaining 2-3 nm spatial resolution at maximum monochromation, for fast-efficient phonon dispersion measurements.

Contact Information

Jordan A Hachtel
R&D Staff
[email protected]