Oak Ridge Today

DOE program funds alloy research led by UT; ORNL collaborates

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Haixuan Xu

Haixuan Xu

KNOXVILLE—An international research team led by an assistant professor at the University of Tennessee in Knoxville has received a grant to help with work involving a key component of nuclear reactors.

The U.S. Department of Energy grant is worth $800,000 over three years, and it has been awarded to UT Assistant Professor Haixuan Xu. It’s part of the Nuclear Energy University Programs funding and will be used to work on a pair of particular steel alloys, a press release said.

“Getting support on this will allow us to investigate and understand the defect evolution in these materials,” said Xu, of the UT Department of Materials Science and Engineering. “What we hope to gain is fundamental insight into the effects of radiation on the alloys so that we can better predict and detect how they will break down over time and adjust the materials accordingly.”

The alloys in question would be used in sodium-cooled reactors. Xu’s research is important because little is known about how the materials stand up to high levels of radiation over time. [Read more…]

High Flux Isotope Reactor at ORNL named Nuclear Historic Landmark

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High Flux Isotope Reactor at ORNL

The High Flux Isotope Reactor vessel at Oak Ridge National Laboratory resides in a pool of water illuminated by the blue glow of the Cherenkov radiation effect. (Photo courtesy ORNL)

 

The High Flux Isotope Reactor, or HFIR, now in its 48th year of providing neutrons for research and isotope production at Oak Ridge National Laboratory, has been designated a Nuclear Historic Landmark by the American Nuclear Society.

“This designation from the ANS recognizes HFIR’s role in the history of the nuclear age, but it also speaks to the excellence of its design and operation,” ORNL Director Thom Mason said. “HFIR remains one of the world’s most capable reactor-based neutron science, radioisotope production, and materials irradiation facilities, and we expect that to continue for many years.”

The designation was proposed by the ANS honors and awards committee and approved on initial ballot by the board of directors.

“The ANS Nuclear Historic Landmark signifies that a nuclear facility has played an important role in nuclear science and engineering,” ANS President Michaele C. Brady Raap said. “HFIR, with its preeminent role in isotope production and neutron science, certainly meets that criteria.”

The reactor was conceived in the late 1950s as a production reactor to meet anticipated demand for transuranic isotopes (“heavy” elements such as plutonium and curium). HFIR today is a U.S. Department of Energy Office of Science User Facility and one of the world’s sole sources of the radioisotope californium-252, used in industry and medicine. ORNL is a DOE lab. [Read more…]

UT-Battelle donates $100K to Emory Valley Center for capital campaign

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UT-Battelle Check to Emory Valley Center

Jennifer Enderson, Emory Valley Center president, accepts a check for the organization’s Capital Campaign from Alan Icenhour, UT-Battelle’s associate lab director for nuclear science and engineering and EVC board member. Also pictured (from left) are Dottie Thompson, Capital Campaign co-chair; John Eschenberg, Emory Valley Center board president; Gene Caldwell, Capital Campaign co-chair, and several Emory Valley Center clients. (Submitted photo)

 

UT-Battelle recently presented a check to Emory Valley Center in support of their ongoing Capital Campaign for a new facility. The new building will incorporate many features to enhance the lives of people with disabilities being served, including a job training center; life enrichment classrooms; adult day center; medical clinic; speech, physical, and occupational services; gym and more. UT-Battelle manages Oak Ridge National Laboratory for the U.S. Department of Energy.

The check was a $100,000 contribution toward UT-Battelle’s pledge of $250,000, the Emory Valley Center said.

Donations from individuals and companies, as well as grant awards, have helped fundraisers reach 75 percent of the total Capital Campaign goal, a press release said. Emory Valley Center is continuing to accept donations for the Capital Campaign from individual and business supporters throughout the community. If you would like to donate, contact EVC Development Director Janet Wood via email at janet.wood@emoryvalleycenter.com or call (865) 813-0576. [Read more…]

ORNL welcomes first Liane Russell fellows

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Liane Russell Reception at ORNL

Lab Director Thom Mason and award-winning scientist Liane Russell welcomed Celia Shiau, Huiyuan Zhu, and Huina Mao at a Thursday reception. Shiau, Mao, and Zhu are the first early-career researchers coming to Oak Ridge National Laboratory under a fellowship named for Russell. (Photo courtesy ORNL)

 

Renowned mammalian geneticist Liane Russell returned Thursday to Oak Ridge National Laboratory to congratulate the first recipients of a new fellowship named in her honor.

ORNL created the Liane Russell Distinguished Early Career Fellowship to attract a diverse and promising work force of early career scientists and engineers whose interests align with DOE missions.

“It is gratifying to see these opportunities being made available to a diverse group of talented young people because, sadly, in the scientific fields this has not always been the case,” Russell said. “For this reason I am particularly honored to have my name attached to the fellowships.”

The competitive, three-year fellowship is aimed toward establishing long-term research careers at ORNL. It is available to outstanding scientists and engineers who have received their doctorate degrees within the past seven years, with emphasis given to attracting women and minority candidates.

The first three Russell fellows, recognized at Thursday’s reception, are: [Read more…]

Tech 2020 president resigns

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John Morris

John Morris

Technology 2020 President and Chief Executive Officer John Morris has announced his resignation effective September 30. He has worked at Tech 2020 since December 2008, and has served as president since 2011.

“I value the time I have spent around Tech 2020, first as an entrepreneurial client company, then as the director of the Center for Entrepreneurial Growth director and later as CEO,” Morris said in a press release Thursday. “This was not an easy decision, but I am an entrepreneur at heart, and I want to return to direct involvement with startups.”

Tech 2020 is the region’s venture development organization, working to help new technology-based companies start up and flourish. The organization supports the technology commercialization efforts at Oak Ridge National Laboratory and the University of Tennessee, and is currently working with more than 30 client businesses at various stages of growth. Tech 2020 also manages a large federally-funded advanced manufacturing project, serves as the headquarters for Meritus Ventures and the newly established Lighthouse Angel Fund, and leads the state’s FIRST Robotics Program and the Regional Advanced Manufacturing Partnership. [Read more…]

Rubber meets the road with new ORNL carbon, battery technologies

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Recycled Tire Battery Schematics

ORNL researchers’ goal is to scale up the recovery process and demonstrate applications as anodes for lithium-ion batteries in large-format pouch cells. (Image courtesy ORNL)

 

Recycled tires could see new life in lithium-ion batteries that provide power to plug-in electric vehicles and store energy produced by wind and solar, say researchers at Oak Ridge National Laboratory.

By modifying the microstructural characteristics of carbon black, a substance recovered from discarded tires, a team led by Parans Paranthaman and Amit Naskar is developing a better anode for lithium-ion batteries. An anode is a negatively charged electrode used as a host for storing lithium during charging.

The method, outlined in a paper published in the journal RSC Advances, has numerous advantages over conventional approaches to making anodes for lithium-ion batteries.

“Using waste tires for products such as energy storage is very attractive not only from the carbon materials recovery perspective but also for controlling environmental hazards caused by waste tire stock piles,” Paranthaman said.

The ORNL technique uses a proprietary pretreatment to recover pyrolytic carbon black material, which is similar to graphite but man-made. When used in anodes of lithium-ion batteries, researchers produced a small, laboratory-scale battery with a reversible capacity that is higher than what is possible with commercial graphite materials. [Read more…]

ORNL scientists uncover clues to role of magnetism in iron-based superconductors

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Magnetism of Iron-based Superconductors

Oak Ridge National Laboratory scientists used scanning transmission electron microscopy to measure atomic-scale magnetic behavior in several families of iron-based superconductors. (Photo courtesy ORNL)

 

New measurements of atomic-scale magnetic behavior in iron-based superconductors by researchers at Oak Ridge National Laboratory and Vanderbilt University are challenging conventional wisdom about superconductivity and magnetism.

The study published in Advanced Materials provides experimental evidence that local magnetic fluctuations can influence the performance of iron-based superconductors, which transmit electric current without resistance at relatively high temperatures.

“In the past, everyone thought that magnetism and superconductivity could not coexist,” said ORNL’s Claudia Cantoni, the study’s first author. “The whole idea of superconductors is that they expel magnetic fields. But in reality things are more complicated.”

Superconductivity is strongly suppressed by the presence of long-range magnetism—where atoms align their magnetic moments over large volumes—but the ORNL study suggests that rapid fluctuations of local magnetic moments have a different effect. Not only does localized magnetism exist, but it is also correlated with a high critical temperature, the point at which the material becomes superconducting. [Read more…]

Mayor, superintendent, others participating in JMS ice bucket challenge

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Thom Mason Ice Bucket Challenge

Oak Ridge National Laboratory Director Thom Mason took the ALS Ice Bucket Challenge on Wednesday afternoon. He then challenged Energy Secretary Ernest Moniz, Lawrence Berkeley National Laboratory Director Paul Alivisatos, and Los Alamos National Laboratory Director Charlie McMillan to do the same. Afterward, Mason said the experience was “bracing.” (Photos by Carlos Jones)

 

ORNL Director Mason took the challenge Wednesday

Oak Ridge Mayor Tom Beehan and Oak Ridge Schools Superintendent Bruce Borchers are participating in an ice bucket challenge at Jefferson Middle School on Friday.

Members of the JMS cross country team will administer the ice buckets.

“You are no doubt aware of the social media-fed phenomenon sweeping the nation in the past couple of weeks: the ALS Ice Bucket Challenge,” coach and JMS teacher Steve Reddick said. “As of today, the challenge has raised $41 million. Many of us have received challenges from friends and foes alike, and we’ve decided to stage a Mega-Ice Bucket Challenge at 4:15 p.m. after cross country practice tomorrow (Friday).” [Read more…]

Honors: Hispanic engineers group recognizes ORNL’s Idrobo

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Juan Carlos Idrobo

Juan Carlos Idrobo

Juan Carlos Idrobo, a researcher at Oak Ridge National Laboratory, has been recognized by the Hispanic Engineer National Achievement Award Corporation with the 2014 Outstanding Technical Achievement Award for groundbreaking research in scanning transmission electron microscopy of 2D materials.

Idrobo works in the Center for Nanophase Materials Sciences’ Microscopy group. The Ecuador native received his bachelor’s in physics from Universidad de Los Andes, Colombia; his master’s in physics from the University of Illinois at Chicago; and doctorate in physics from the University of California, Davis. He joined the ORNL research staff in 2010.

The award is associated with Great Minds in STEM, a nonprofit organization that advocates science, technology, engineering, and mathematics careers for the Hispanic community. [Read more…]

Honors: ORNL’s Varela receives Microscopy Society’s Burton Medal

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Maria Varela

Maria Varela

Maria Varela, a researcher at Oak Ridge National Laboratory, has received the Microscopy Society of America’s Burton Medal for early career scientists.

Varela’s research experience includes thin-film growth, transport properties, and structural characterization by x-ray diffraction and electron microscopy. She specializes in aberration corrected scanning transmission electron microscopy and atomic resolution energy loss spectroscopy.

After receiving her doctorate in physics from Complutense University in Madrid, Spain, Varela came to ORNL as a Eugene P. Wigner Fellow. She has approximately 180 publications in refereed journals and has presented more than 100 invited talks and seminars. She has collaborated with scientists from more than 50 universities in the United States and abroad. [Read more…]

USEC: ORNL extends American Centrifuge demonstration program into 2015

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American Centrifuge Technology Manufacturing Center

The American Centrifuge Technology Manufacturing Center in south Oak Ridge is pictured above. (Photos courtesy USEC)

Oak Ridge National Laboratory has exercised an option to extend the American Centrifuge demonstration program into 2015, USEC announced Wednesday.

The announcement was included in a report on second quarter results, when the uranium enrichment company had a net loss of $28 million. USEC, which has operations in Oak Ridge, is undergoing a Chapter 11 bankruptcy and is turning over its gaseous diffusion plant in Paducah, Kentucky, to the U.S. Department of Energy.

Funding for the next-generation American Centrifuge activities was previously provided under a cooperative agreement with the U.S. Department of Energy. Under that cost-sharing agreement, DOE provided 80 percent of the funding, and USEC provided 20 percent for research, development, and demonstration work performed from June 1, 2012, through April 30, 2014, when the agreement expired.

On May 1, USEC signed a new agreement with UT-Battelle, which manages and operates ORNL for DOE. The agreement was called the American Centrifuge Technology Demonstration and Operations, or ACTDO, agreement, and it allows for continued cascade operations and the continuation of core American Centrifuge research and technology activities and the furnishing of related reports to ORNL, USEC said in its quarterly report.

On July 31, ORNL exercised its option to extend the period of performance for the ACTDO Agreement by an additional six months to March 31, 2015. The agreement also provides ORNL with one additional option to extend the agreement by six months to September 30, 2015. [Read more…]

DOE, ORNL, state conduct emergency preparedness exercise Aug. 20

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Oak Ridge National Laboratory Sign

Emergency responders from the U.S. Department of Energy and Oak Ridge National Laboratory—along with federal, state, and local emergency management personnel—will conduct an emergency exercise on Wednesday, August 20, at ORNL.

The public may observe emergency responders simulating response activities and performing environmental monitoring or sampling in the area surrounding the Oak Ridge Reservation. These activities are part of the exercise.

The exercise will begin at approximately 8 a.m. Eastern time and conclude around noon.

This event is one of a series of emergency exercises conducted regularly by the DOE facilities in Oak Ridge. The exercises test the ability of emergency personnel to respond quickly and effectively to emergency situations and ensure that the public, site employees and the environment would be protected in the event of an actual emergency at the facilities.