From Northwestern University Center for Atom-Probe Tomography
Imago Scientific Instruments has developed their Local-Electrode Atom-Probe (LEAP) tomograph. Like a traditional Atom-Probe Tomograph (APT), the LEAP tomograph achieves true 3-D atomic-scale analysis by using a high electric field to remove individual atoms from material surfaces and a position-sensitive detector to record information that reveals the atom's position and identity. However, the incorporation of a local electrode eliminates or mitigates many of the performance limitations of traditional APTs. The Imago LEAP tomograph analyzes significantly larger volumes (typically 50 x 50 x 100nm) in much less time (minutes). Further, the LEAP tomograph is compatible with a variety of specimen geometries, including specimens made with TEM-like techniques.
The NUCAPT LEAP tomograph has collected over 116,945,523,776 "good hits" since December 7, 20041.
1This number is calculated in live-time. However, your browser might be retrieving this page from a cache. You might need to bypass your cache or click here to purge the server cache. Many of these "good hits" are single ions, but some are multi-ion hits. (Ions for discarded or interrupted runs aren't counted, nor are "bad hits.")
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