Oak Ridge Today

New director named at Climate Change Science Institute at ORNL

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Jack Fellows

Jack Fellows

Jack D. Fellows, who oversaw a $110 billion federal science portfolio under two U.S. presidents and co-founded the U.S. Global Change Research Program integrating all federal Earth system science research programs, has been appointed director of the Climate Change Science Institute at Oak Ridge National Laboratory.

Martin Keller and Jeff Nichols, leaders of the Energy and Environmental Sciences Directorate and the Computing and Computational Sciences Directorate respectively, announced Fellows’ appointment.

“Jack Fellows is a welcome addition to our climate change science program,” said ORNL Director Thom Mason. “His extensive experience in directing research and education programs, most recently as vice-president for the University Corporation for Atmospheric Research, will be particularly valuable as CCSI moves forward in its work of advancing the understanding of the Earth system, describing the consequences of climate change, and evaluating and informing policy on the potential outcomes of responses to climate change.” [Read more…]

ORNL’s Jeskie active on chemical safety panels

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Kim Jeskie

Kim Jeskie

Oak Ridge National Laboratory’s Kim Jeskie led the 12-member committee that developed new chemical safety guidelines described in the report, “Identifying and Evaluating Hazards in Research Laboratories,” released by the American Chemical Society at its 246th National Meeting and Exposition held in September.

Jeskie was also appointed last spring to serve on the National Research Council Committee on Establishing and Promoting a Culture of Safety in Academic Laboratory Research. That panel is examining chemical research laboratory safety in nonindustrial settings.

She is the 2013 past chair of the ACS Division of Chemical Health and Safety. At ORNL, Jeskie directs the Integrated Operations Support Division, where she is responsible for work planning and hazards analysis systems and tools. She lives in Harriman.

ORNL physicist to discuss sensors, detection technologies

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Bruce Warmack

Bruce Warmack

A physicist at Oak Ridge National Laboratory will discuss sensors and detection technologies, such as those used in smoke alarms, at a Friends of ORNL meeting on Tuesday.

The talk by Bruce Warmack of the ORNL Measurement Science and Systems Engineering Division is titled “Making machines sense our world.”

The meeting is open to the public, and it starts at 11 a.m. Tuesday at the University of Tennessee Resource Center at 1201 Oak Ridge Turnpike. [Read more…]

UT receives DOE funds, ORNL help for spent nuclear fuel studies

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KNOXVILLE—The question of what to do with spent nuclear fuel in the U.S. has never been definitively answered. A University of Tennessee in Knoxville professor has received funding from the U.S. Department of Energy to develop new capabilities for evaluating potential alternatives to directly disposing of used fuel.

The award is part of the DOE’s 2013 Nuclear Energy University Programs which is awarding $42 million to 38 American universities and colleges for nuclear energy research and development projects focused on developing innovative solutions.

A proposal by Steven Skutnik, assistant professor in nuclear engineering, was awarded $755,000 to develop new capabilities for a fuel cycle simulator called CYCLUS by building on an Oak Ridge National Laboratory software package for nuclear fuel modeling called ORIGEN. [Read more…]

ORNL’s Stuart Daw elected chemical engineering fellow

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Stuart Daw

Stuart Daw

C. Stuart Daw of Oak Ridge National Laboratory has been elected fellow of the American Institute of Chemical Engineers.

He was selected by AIChE for his numerous outstanding contributions to the chemical engineering profession.

Daw, a UT-Battelle Corporate Fellow, works in the U.S. Department of Energy lab’s Energy and Transportation Science Division. He lives in Knoxville.

ORNL: Toxic methylmercury-producing microbes more widespread than realized

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Microbes that live in rice paddies, northern peat bogs, and other previously unexpected environments are among the bacteria that can generate highly toxic methylmercury, researchers at Oak Ridge National Laboratory and the Smithsonian Environmental Research Center have learned.

This finding, published in Environmental Science and Technology, explains why deadly methylated mercury is produced in areas where the neurotoxin’s presence has puzzled researchers for decades. Methylmercury—the most dangerous form of mercury—damages the brain and immune system and is especially harmful to developing embryos. Certain bacteria transform inorganic mercury into toxic methylmercury. [Read more…]

ORNL-grown oxygen ‘sponge’ presents path to better catalysts, energy materials

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ORNL Oxygen Sponge

This schematic depicts a new ORNL-developed material that can easily absorb or shed oxygen atoms. (Photo courtesy ORNL)

Scientists at Oak Ridge National Laboratory have developed a new oxygen “sponge” that can easily absorb or shed oxygen atoms at low temperatures. Materials with these novel characteristics would be useful in devices such as rechargeable batteries, sensors, gas converters, and fuel cells.

Materials containing atoms that can switch back and forth between multiple oxidation states are technologically important but very rare in nature, said ORNL’s Ho Nyung Lee, who led the international research team that published its findings in Nature Materials. [Read more…]

UT names nuclear materials expert as 13th UT-ORNL Governor’s Chair

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Steve Zinkle

Steve Zinkle

KNOXVILLE—Steve Zinkle, an authority on the effect of radiation on materials in fission and fusion nuclear reactors, has been named the thirteenth University of Tennessee–Oak Ridge National Laboratory Governor’s Chair.

Zinkle will serve as Governor’s Chair for Nuclear Materials, based in the department of nuclear engineering at UT with a complementary appointment in materials science and engineering. He begins at UT on Oct. 1. [Read more…]

Top neutron scientists named to positions at ORNL

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Oak Ridge National Laboratory’s Neutron Sciences Directorate, or NScD, home organization for the Spallation Neutron Source and High Flux Isotope Reactor, has filled two high-level administrative positions with leaders in the neutron scattering field.

Rob McQueeney, recently with Iowa State University and Ames Laboratory, has been named NScD’s deputy associate laboratory director. Alan Tennant, currently with the Helmholtz-Zentrum Berlin in Germany, has been named chief scientist for the NScD. [Read more…]

ORNL superconducting wire yields unprecedented performance

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The ability to control nanoscale imperfections in superconducting wires results in materials with unparalleled and customized performance, according to a new study from the U.S. Department of Energy’s Oak Ridge National Laboratory.

Applications for superconducting wires, which carry electricity without resistance when cooled to a critical temperature, include underground transmission cables, transformers, and large-scale motors and generators. But these applications require wires to operate under different temperature and magnetic field regimes. [Read more…]

ORNL finding goes beyond surface of oxide films

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Oxide Figure

This figure shows the spectroscopic measurement (current as a function of voltage) and this as a function of temperature. (Reproduced by permission of The Royal Society of Chemistry)

Better batteries, catalysts, electronic information storage and processing devices are among potential benefits of an unexpected discovery made by Oak Ridge National Laboratory scientists using samples isolated from the atmosphere.

Researchers at the U.S. Department of Energy lab learned that key surface properties of complex oxide films are unaffected by reduced levels of oxygen during fabrication—an unanticipated finding with possible implications for the design of functional complex oxides used in a variety of consumer products, said Zheng Gai, a member of DOE’s Center for Nanoscale Materials Sciences at ORNL.

The findings are detailed in a paper published in Nanoscale. [Read more…]

Tuesday lecture features leader in high-performance computing at ORNL

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Jeff Nichols

Jeff Nichols

A leader in high-performance computing at Oak Ridge National Laboratory will be the featured speaker at the monthly meeting of Friends of ORNL.

Jeff Nichols is associate laboratory director for ORNL’s Computing and Computational Sciences Directorate. Nichols leads the laboratory’s advanced high-performance computing in priority areas such as climate change, nuclear energy, fusion energy, nanotechnology, and biotechnology, a press release said. [Read more…]