NIST'S SEMPA FACILITY UPGRADED.The ability of NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. scientists to image small magnetic structures has been recently improved by the installation of a new, ultra-high vacuum, field emission scanning electron microscope scan·ning electron microscope n. Abbr. SEM An electron microscope that forms a three-dimensional image on a cathode-ray tube by moving a beam of focused electrons across an object and reading both the electrons scattered by the object and in the NIST Scanning Electron Microscopy with Polarization Analysis (SEMPA SEMPA Society of Emergency Medicine Physician Assistants SEMPA Scanning Electron Microscopy with Polarization Analysis SEMPA Software Engineering Methods for Parallel Scientific Applications SEMPA Scanning Electron Microscope and Particle Analyzer ) facility. This new instrument, when coupled to the NIST polarization detection system, will allow faster imaging with higher resolution. The new microscope replaces two older units and provides a high-intensity field emission electron source and state-of-the-art electron optics. NIST will now be able to image the magnetization of magnetic nanostructures with 10 nm spatial resolution (Data West Research Agency definition: see GIS glossary.) A measure of the accuracy or detail of a graphic display, expressed as dots per inch, pixels per line, lines per millimeter, etc. It is a measure of how fine an image is, usually expressed in dots per inch (dpi). , the highest of any SEMPA system worldwide. The improved performance is essential to keep pace with the shrinking length scales of magnetic structures in magnetic media, spintronic devices, and magnetic sensors. The microscope is also an Auger microprobe microprobe /mi·cro·probe/ (mi´kro-prob?) a minute probe, as one used in microsurgery. microprobe a minute probe, such as one used in microsurgery. with facilities for in situ thin film growth and tools for nanoscale compositional and structural analysis. The microscopes operation is fully automated and under computer control, permitting remote control of the microscope, and immediate electronic transfer of SEMPA images and measurements to NIST customers. |
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