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    • 2019-12-02 10:15:04
    • Article ID: 723320

    Story Tips from the Department of Energy’s Oak Ridge National Laboratory, December 2019

    • Credit: Vipin Kumar/Oak Ridge National Laboratory, U.S. Dept. of Energy

      Researchers conducted simulated lightning strike tests on additively manufactured polymeric material applied to carbon fiber reinforced plastic, or CFRP. The test revealed minimal damage to the polymer protected CFRP compared to the unprotected material.

    • Credit: Trey Gebhart/Oak Ridge National Laboratory, U.S. Dept. of Energy

      Scientists tested ORNL-developed pellet injection technology with shattered argon pellets shot out of a bent shatter tube in a lab at ORNL. The technology was later tested on an experimental fusion plasma to mitigate runaway electrons, preventing interior wall damage.

    • Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy

      The life and legacy of pioneering geneticist Dr. Liane Russell will be celebrated during a symposium on December 20 at Oak Ridge National Laboratory.

    Manufacturing – Lightning strike out 

    Researchers at Oak Ridge National Laboratory demonstrated that an additively manufactured polymer layer, when applied to carbon fiber reinforced plastic, or CFRP, can serve as an effective protector against aircraft lightning strikes. CFRP is usually used on an airplane’s exterior because it’s lighter than traditional metal. Although lightweight, CFRP has a drawback – low electrical conductivity and heat resistance, making it vulnerable to lightning strikes. “We printed a novel, easy to apply adhesive material for CFRP,” ORNL’s Vipin Kumar said. “The polymer’s chain-like structure makes the resulting material electrically conductive and structurally strong with thermal treatment.” In a study, the research team conducted simulated lightning strike tests on polymer protected CFRP versus unprotected. “The polymer-protected sample showed minimal damage upon visual inspection and enabled much more uniform heat dissipation,” Kumar said. “Our results proved that the polymer layer provided a continuous path to effectively distribute the lightning current.” [Contact: Jennifer Burke, (865) 576-3212; burkejj@ornl.gov

    Image: https://www.ornl.gov/sites/default/files/2019-11/Lightning%20strike%20test%201.jpg 

    Credit: Researchers conducted simulated lightning strike tests on additively manufactured polymeric material applied to carbon fiber reinforced plastic, or CFRP. The test revealed minimal damage to the polymer protected CFRP compared to the unprotected material. Credit: Vipin Kumar/Oak Ridge National Laboratory, U.S. Dept. of Energy 

    Fusion – Argon calling

    As scientists study approaches to best sustain a fusion reactor, a team led by Oak Ridge National Laboratory investigated injecting shattered argon pellets into a super-hot plasma, when needed, to protect the reactor’s interior wall from high-energy runaway electrons. Other pellet materials, frozen from room-temperature gasses, have successfully reduced the plasma’s thermal energy, but argon was most effective at runaway electron dissipation. Using fuel pellet injection technology – which literally shoots cryogenic pellets of fuel into the plasma to raise its density – the team used an injector optimized for argon during a series of tests at the DIII-D National Fusion Facility. “Now that we have demonstrated argon’s effectiveness, our next step is to determine how many pellets and pellet injectors are needed for a solution that’s applicable,” said ORNL’s Larry Baylor. This research may be scaled up for possible application on ITER, the international experimental reactor. [Contact: Sara Shoemaker, (865) 576-9219; shoemakerms@ornl.gov]

    Image: https://www.ornl.gov/sites/default/files/2019-11/13966_ar_20degree_enhanced.jpg

    Video: https://youtu.be/0sQIdmn6EQo 

    Caption: Scientists tested ORNL-developed pellet injection technology with shattered argon pellets shot out of a bent shatter tube in a lab at ORNL. The technology was later tested on an experimental fusion plasma to mitigate runaway electrons, preventing interior wall damage. Credit: Trey Gebhart/Oak Ridge National Laboratory, U.S. Dept. of Energy 

    Biology – Honoring a genetics pioneer

    The life and legacy of Dr. Liane Russell – world-renowned for her groundbreaking genetics research in mice – will be celebrated during a symposium on December 20 beginning at 8:30 a.m. at Oak Ridge National Laboratory. The event will feature past and current recipients of the Liane B. Russell Distinguished Early Career Fellowship, as well as select guests who were influenced by Russell’s work and life. She was lauded for her contributions to mammalian genetics, including the chromosomal basis of sex determination in mammals and the effect of radiation on embryos. Findings by Russell and her husband, the late William L. Russell, about the vulnerability of embryos to radiation led to changes in radiological practices for female patients of child-bearing age. Known as “Lee,” Russell was also an active conservationist, as a founder of the Tennessee Citizens for Wilderness Protection. Visitors to the symposium must contact ORNL in advance to make arrangements. [Contact: Sara Shoemaker, (865) 576-9219; shoemakerms@ornl.gov]

    Image: https://www.ornl.gov/sites/default/files/2019-07/LianeRussell40s200_1.jpg 

    Caption: The life and legacy of pioneering geneticist Dr. Liane Russell will be celebrated during a symposium on December 20 at Oak Ridge National Laboratory. Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy

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    Faced with pandemic shortages, researchers combine heat and humidity to disinfect N95 masks for reuse

    Faced with pandemic shortages, researchers combine heat and humidity to disinfect N95 masks for reuse

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    Renowned physicist and former diagnostics developer at PPPL wins Asia Pacific plasma physics award

    Renowned physicist and former diagnostics developer at PPPL wins Asia Pacific plasma physics award

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    Argonne National Laboratory and AT&T extend climate resiliency project nationwide

    Argonne National Laboratory and AT&T extend climate resiliency project nationwide

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    Key Partners Mark Launch of Electron-Ion Collider Project

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    Fermilab scientist Vladimir Shiltsev elected to Academia Europaea

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    PPPL physicist Hutch Neilson receives award for decades of leadership on national and international fusion experiments

    PPPL physicist Hutch Neilson receives award for decades of leadership on national and international fusion experiments

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    Harvesting Energy from Light using Bio-inspired Artificial Cells

    Harvesting Energy from Light using Bio-inspired Artificial Cells

    Scientists designed and connected two different artificial cells to each other to produce molecules called ATP (adenosine triphosphate).

    Engineering Living Scaffolds for Building Materials

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    When Ions and Molecules Cluster

    When Ions and Molecules Cluster

    How an ion behaves when isolated within an analytical instrument can differ from how it behaves in the environment. Now, Xue-Bin Wang at Pacific Northwest National Laboratory devised a way to bring ions and molecules together in clusters to better discover their properties and predict their behavior.

    Tune in to Tetrahedral Superstructures

    Tune in to Tetrahedral Superstructures

    Shape affects how the particles fit together and, in turn, the resulting material. For the first time, a team observed the self-assembly of nanoparticles with tetrahedral shapes.

    Tracing Interstellar Dust Back to the Solar System's Formation

    Tracing Interstellar Dust Back to the Solar System's Formation

    This study is the first to confirm dust particles pre-dating the formation of our solar system. Further study of these materials will enable a deeper understanding of the processes that formed and have since altered them.

    Investigating Materials that Can Go the Distance in Fusion Reactors

    Investigating Materials that Can Go the Distance in Fusion Reactors

    Future fusion reactors will require materials that can withstand extreme operating conditions, including being bombarded by high-energy neutrons at high temperatures. Scientists recently irradiated titanium diboride (TiB2) in the High Flux Isotope Reactor (HFIR) to better understand the effects of fusion neutrons on performance.

    Better 3-D Imaging of Tumors in the Breast with Less Radiation

    Better 3-D Imaging of Tumors in the Breast with Less Radiation

    In breast cancer screening, an imaging technique based on nuclear medicine is currently being used as a successful secondary screening tool alongside mammography to improve the accuracy of the diagnosis. Now, a team is hoping to improve this imaging technique.

    Microbes are Metabolic Specialists

    Microbes are Metabolic Specialists

    Scientists can use genetic information to measure if microbes in the environment can perform specific ecological roles. Researchers recently analyzed the genomes of over 6,000 microbial species.


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