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HAADF STEM image of single-atom impurities in meteorite nanodiamond. Nion UltraSTEM 200-X, 60 kV, 80 pA.

Bruker Quantax XFlash UHV SDD. Rhonda Stroud et al., NRL, to be published.

Kate Burgess (ASEE Postdoctoral Fellow, NRL):

“From achieving 80 pm spatial resolution ten days after the microscope’s delivery to obtaining single-atom-sensitivity EDX spectra in seconds, the Nion UltraSTEM has exceeded expectations. Any day you get an “Oh, wow!” from a visiting Nobel Prize winner looking at your latest data is a great day. At NRL with our new UltraSTEM, we have had this and more.”

Left to right: Nabil Bassim, Kate Burgess, Todd Brintlinger and Rhonda Stroud (group leader) at the controls of NRL’s

Nion UltraSTEM 200-X™

UltraSTEM 100 & 200™

UltraSTEM-MC™ (HERMES)

UltraSTEM-X™ (with EDXS)

...atomic-resolution EELS mapping & sub-Å imaging

...UltraSTEM capabilities plus vibrational spectroscopy

...UltraSTEM capabilities plus single-atom EDXS

Si

S

1 2

100mm² windowless SDD at 10.5mm ⇒ 0.7sr Nanodiamond EDXS of atom 1 (acq. time = 9.4 s)

EDXS of atom 2 (acq. time = 8 s)

1nm

E (keV)

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