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Posted: Jun 11th, 2012 Small worlds come into focus with new Sandia instrument ( Nanowerk News ) Paul Kotula recently told a colleague at another laboratory thatSandia's new aberration-corrected scanning transmission electronmicroscope (AC-STEM) was like a Lamborghini with James Bondfeatures. The $3.2 million FEI Titan G2 8200 Sandia accepted in February is50 to 100 times better than what went before in terms of resolutionand the time it takes to analyze a sample, say Paul and Ping Lu(both 1822), principal investigators. Its unique combination of X-ray detectors and very high resolutionoffers magnification that Paul compares to a telescope powerfulenough to show two peas side by side on the moon. Slides ofmicrostructures analyzed with the AC-STEM and Sandia's olderanalytical microscope highlight the new capabilities, with a clearimage from the AC-STEM and a fuzzy one from its predecessor. Ananalysis that took seven minutes on the AC-STEM took two hours onthe previous instrument, he says. Ping and Paul operate the microscope from a basement lab adjacentto the environment-controlled room that houses it. They're not inthe same room because the instrument is so sensitive even clickinga computer mouse against a desk would cause an image to jump, Pingsays. "At the atomic scale, it doesn't take too much," he says. Principal investigators Paul Kotula, left, and Ping Lu show offSandia's new aberration-corrected scanning transmission electronmicroscope, which has a unique combination of X-ray detectors andvery high resolution and is capable of doing analyses in far lesstime than the Labs' older analytic microscope. Operating unit from 1,000 miles away The remote operation affords another advantage: Sandia/Californiaresearchers can run it from 1,000 miles away, which theydemonstrated in March. Paul jokes the only thing they can't do fromCalifornia is load the sample and fill the liquid nitrogen thatcools the machine. The AC-STEM delivers electron beams accelerated at voltages from 80kV to 200 kV, allowing researchers to study properties ofstructures at the nanoscale. The e-commerce company in China offers quality products such as Rail Mounted Terminal Blocks Manufacturer , Feed Through Terminal Block, and more. For more , please visit PCB Terminal Block today!
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