Oak Ridge Today

UT engineering students help ORNL, Local Motors print drivable 3D car

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3D Car

John Rogers, co-founder and CEO of Local Motors, left, and Douglas Woods, president of the Association for Manufacturing Technology, drive away from the International Manufacturing Technology Show in Chicago over the weekend in a car printed with the help of UT students. (Photo courtesy UT)

 

KNOXVILLE—The only “car” that most people associate with printers is a “car-tridge” of ink, but that may soon change thanks in part to several students at the University of Tennessee in Knoxville.

UT, Oak Ridge National Laboratory, Local Motors, Cincinnati Incorporated, and Oak Ridge Associated Universities teamed up to print a working, drivable car over the weekend at the International Manufacturing Technology Show in Chicago.

The Strati 3D, officially produced by Local Motors, which has an office on Market Square in Knoxville, highlighted the show and placed what sounds like a product of science fiction firmly in the realm of reality.

“This brand-new process disrupts the manufacturing status quo,” said John B. Rogers Jr., chief executive officer of Local Motors. “It changes the consumer experience and proves that a car can be born in an entirely different way.” [Read more…]

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…]

Guest column: Council looks to future in policy, planning meetings

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Note: This is a brief report to the town on Oak Ridge City Council meetings on policy and planning.

Following a vote in June to do so, City Council has been having two policy and planning meetings each month.

At our first meeting, we agreed to follow the general outline of the Comprehensive Plan in order to give ourselves focus. We added a section for the U.S. Department of Energy. Council members Chuck Hope, Trina Baughn, David Mosby, Charlie Hensley, and Anne Garcia Garland have been attending. City attorney Ken Krushenski, a couple of interested citizens, and the press have attended also.

The most encouraging outcome so far has been that the five have begun to operate as a team. We are looking at ways to improve the council’s effectiveness.

Those who follow the Council agenda online will have noticed that Monday’s agenda included a resolution from Council to have four things occur: [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…]

Assessment team to visit DOE disposal facility, meet with community

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Three members of the consulting team selected to conduct a community impact assessment of the U.S. Department of Energy’s proposed Environmental Management Disposal Facility will visit Oak Ridge on Monday and Tuesday, September 8 and 9. The purpose of the visit is to tour the existing disposal facility and the site of the proposed EMDF, to gather information, and to meet with local stakeholders, a press release said.

The team members are Karl Kalbacher, project manager and director of environment, economics and grant services for The Ferguson Group in Washington, D.C.; Mark Rockel, principal consultant for ENVIRON International Corporation; and Jason Miller, principal of ENVIRON International Corporation.

The team will be available to meet community stakeholders on both days: [Read more…]

Safety Fest TN: ORAU, CNS experts to discuss effective safety communications

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Free seminar draws upon lessons learned at Uranium Processing Facility Project

Health and safety experts from Oak Ridge Associated Universities and a communications specialist from Consolidated Nuclear Security, the new contractor at the Y-12 National Security Complex, will discuss effective safety communications during Safety Fest TN in Oak Ridge this week.

The ORAU experts are David Duncan and Jeffrey Miller, and the CNS communications specialist is Kathryn King.

Their seminar, scheduled for 12:30 p.m. Tuesday, September 9, informs organizations on how to improve the effectiveness of safety communications by first examining how communication breakdowns contributed to well-known safety catastrophes, like the 2010 Deepwater Horizon oil spill in the Gulf of Mexico, an ORAU press release said. They will also present detailed instructions on how to develop an effective safety communications plan, methods for implementing and monitoring the plan, and techniques for measuring and evaluating the effectiveness of safety communications.

“Successful case studies will be presented including experiences from the Y-12 National Security Complex’s Uranium Processing Facility Project, where the effectiveness of safety communications has dramatically improved over a three-year period after implementing these methods,” the press release said. [Read more…]

Gehl named manager of ORAU-managed beryllium lab

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Ann Gehl

Ann Gehl

Oak Ridge Associated Universities has announced that Ann Gehl, who has nearly 30 years of medical technology and laboratory experience, has become the manager of the Beryllium Lymphocyte Proliferation Laboratory. ORAU manages the lab for the U.S. Department of Energy.

Gehl is replacing Linda Nichols, who has decided to step down from her role as lab manager after 12 years but will continue working in the lab as senior technologist and quality control specialist. Gehl joined ORAU in January 2014 and has been working with Nichols since then to transition work responsibilities.

“We are pleased to bring someone with the Ann’s caliber of experience to lead our staff and continue building upon our outstanding reputation as a high-quality DOE laboratory,” said Donna Cragle, vice president at ORAU. “At the same time, we also wish to thank Linda for her exceptional leadership over these many years and are excited that she will continue as a valued member of our lab team.”

Prior to joining ORAU, Gehl worked at the University of Tennessee Medical Center for more than 20 years, first as a medical technologist in the Transplant Laboratory and then as senior flow cytometry technologist in the Immunology Laboratory. In that role, she maintained and developed procedures used in processing blood samples to help identify biomarkers for lymphoma and leukemia. She also served as an instructor, teaching flow cytometry to students in UT’s Clinical Laboratory Scientist program. [Read more…]

DOE appoints new member to advisory board

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Wanfang Zhou

Wanfang Zhou

The U.S. Department of Energy has appointed Wanfang Zhou to the Oak Ridge Site Specific Advisory Board. Zhou was appointed to a two-year term on the federally chartered citizens’ panel that provides independent advice and recommendations to DOE’s Oak Ridge Office of Environmental Management, which is responsible for the cleanup of the Oak Ridge Reservation.

Zhou, a Knoxville resident, is a hydrogeologist with ERT Inc., a company that provides information technology, cybersecurity, program support, and engineering and environmental services to federal and state government agencies.

He received his doctorate in water resources and environmental engineering from the University of London’s Imperial College of Science, Technology, and Medicine. He is a certified professional geologist by the American Institute of Professional Geologists and a registered professional geologist in five southern states. [Read more…]

DOE responds to advisory board recommendation
 on groundwater studies

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The U.S. Department of Energy’s Oak Ridge Office of Environmental Management has responded to a recommendation made earlier this year by the Oak Ridge Site Specific Advisory Board.

In May, the federally appointed citizens’ panel recommended that DOE conduct additional groundwater studies to address any potential offsite migration of chemicals or radioisotopes from DOE’s Oak Ridge Reservation. The recommendation focuses on developing information that fosters a better understanding of potential impacts of groundwater contamination related to risk mitigation, groundwater remediation, and long-term stewardship.

In 2013, DOE, the Environmental Protection Agency, and the Tennessee Department of Environment and Conservation held a series of workshops to prioritize groundwater pathways on the ORR. Together the agencies created a groundwater strategy document that described the potential for releases from waste disposal sites and storage areas. The document also prioritized known groundwater plumes, concentration of contaminants, contaminants of concern, and potential health risks. [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…]