Friday, June 10, 2011, 12:00 pm — Seminar Room, Bldg. 725
A new class of electron microscope has been developed for the chemical microanalysis of a wide range of real world samples using photoelectron spectroscopy. Highly structured, three dimensional samples, such as fiber mats and fracture surfaces can be imaged, as well as insulators, and magnetic materials. The new microscope is unique in using the magnetic vector potential field as a spatial reference for imaging. The very different properties of the imaging method open up many opportunities for novel experiments such as the high resolution imaging of in situ chemical reactions on highly textured surfaces. A prototype instrument on U4A has demonstrated imaging of uncoated silk, magnetic steel wool, and micron sized single strand tungsten wires. This demonstration suggests that the microscope will have a major impact in many fields including: the study of catalysis, biological and organic thin films, battery technologies, and geology.
This work has been funded by several NIST SBIR awards with the support and encouragement of Dan Fischer and the NIST Synchrotron Methods Group at NSLS.
Hosted by: Elio Vescovo
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