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Date:4/3/2012

aterials Science (Vol. 47, No. 3): http://www.deepdyve.com/lp/springer-journals/vacuum-tight-sample-transfer-stage-for-a-scanning-electron-microscopic-EiV21GnUpn. [Contact: Ron Walli, (865) 576-0226; wallira@ornl.gov]

ELECTRICITY -- Grid game changer . . .

Waste and inefficiencies in the nation's electric grid could be dramatically reduced with the implementation of a magnetic amplifier being developed by a team led by Aleks Dimitrovski of Oak Ridge National Laboratory's Energy and Transportation Science Division. If successful, the electromagnetic-based amplifier-like device would provide low-cost regulation of power flow, a feat that until now was prohibitively expensive. ORNL's controller could provide a reliable cost-effective solution to the problem that plagues the outdated and inefficient grid. "Ordinarily, such a device would require expensive superconductive wire, but the ferromagnetic core design of our device could serve as a low-cost alternative that is equally adept at regulating power flow," Dimitrovski said. [Contact: Ron Walli, (865) 576-0226; wallira@ornl.gov]

SUPERCONDUCTORS -- Surprising transitions . . .

Neutron scattering experiments performed on iron-based superconducting material at Oak Ridge National Laboratory and Canada's Chalk River Laboratories have unveiled surprising changes in the materials' subatomic structural and magnetic properties when subjected to relatively low pressures. The experiments on barium iron arsenide crystals revealed changes in spin-ordering and phase transitions that offer insight into the dynamics that enable high-temperature superconductivity. Boston University researcher Stephen Wilson, lead author of the Physical Review Letters paper, cited the triple-axis spectrometer at ORNL's High Flux Isotope Reactor along with the laboratory's high-quality crystal fabrication capability in
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Contact: Ron Walli
wallira@ornl.gov
865-576-0226
DOE/Oak Ridge National Laboratory
Source:Eurekalert

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