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ORNL collaborator Hsiu-Wen Wang led the neutron scattering experiments at the Spallation Neutron Source to probe complex electrolyte solutions that challenge nuclear waste processing at Hanford and other sites. Credit: Genevieve Martin/Oak Ridge National Laboratory, U.S. Dept. of Energy.

Focus on nuclear waste chemistry could help Hanford cleanup challenges

Researchers at the Department of Energy’s Oak Ridge National Laboratory, Pacific Northwest National Laboratory and Washington State University teamed up to investigate the complex dynamics of low-water liquids that challenge nuclear waste processing at federal cleanup sites.

Illustration of a tooth cross-section showing a dental filling adhered with adhesive resin containing nanoparticles. The resin layer is highlighted in yellow, with labels indicating its bioactive function (preventing cracks by forming crystals in micro-gaps) and antibacterial function (killing bacteria on contact, enhanced by visible light). The surrounding gum tissue and biofilm are also depicted, emphasizing the protective properties of the adhesive.

Antibacterial Nanoparticles: On a Mission to Save Your Teeth

To help address the issue of dental restoration, Oak Ridge National Laboratory researchers are using neutron scattering to study how nanoparticles with antibacterial properties can be added to adhesive resins, which are used by dentists to strengthen the bond between a tooth and its polymer composite filling.

ORNL researcher Karren More has been elected fellow of the Microscopy Society of America.

Microscopy Society of America elects ORNL's Karren More fellow

OAK RIDGE, Tenn., March 22, 2019 – Karren Leslie More, a researcher at the Department of Energy’s Oak Ridge National Laboratory, has been elected fellow of the Microscopy Society of America (MSA) professional organization.

Illustration of the intricate organization of the PKA structure, wherein different parts of the protein are connected through elaborate hydrogen bonding networks (dashed yellow lines), glued together by the hydrophobic assemblies (light blue and orange volumes)—all working together to build the functional active site. Insert shows protonation of the transferred phosphoryl group (cyan mesh) and its many interactions with water and the active site amino acid residues. Credit: Jill Hemman/ORNL

Neutrons paint atomic portrait of prototypical cell signaling enzyme

OAK RIDGE, Tenn., March 20, 2019—Direct observations of the structure and catalytic mechanism of a prototypical kinase enzyme—protein kinase A or PKA—will provide researchers and drug developers with significantly enhanced abilities to understand and treat fatal diseases and neurological disorders such as cancer, diabetes, and cystic fibrosis.

Neutron scattering allowed direct observation of how aurein induces lateral segregation in the bacteria membranes, which creates instability in the membrane structure. This instability causes the membranes to fail, making harmful bacteria less effective.

Neutrons—Fighting superbugs

As the rise of antibiotic-resistant bacteria known as superbugs threatens public health, Oak Ridge National Laboratory’s Shuo Qian and Veerendra Sharma from the Bhaba Atomic Research Centre in India are using neutron scattering to study how an antibacterial peptide interacts with and fights harmful
carbon nanospikes

ReactWell licenses ORNL catalyst for energy conversion applications

OAK RIDGE, Tenn., March 1, 2019—ReactWell, LLC, has licensed a novel waste-to-fuel technology from the Department of Energy’s Oak Ridge National Laboratory to improve energy conversion methods for cleaner, more efficient oil and gas, chemical and

To develop complex materials with superior properties, Vera Bocharova uses diverse methods including broadband dielectric spectroscopy. Credit: Oak Ridge National Laboratory, U.S. Dept. of Energy; photographer Jason Richards

Vera Bocharova: Advancing the frontiers of knowledge about soft materials

Vera Bocharova at the Department of Energy’s Oak Ridge National Laboratory investigates the structure and dynamics of soft materials.

Yue Yuan standing with Flora Meilleur in a railed walkway at the Spallation Neutron Source.

Doctoral student creating “scrubber” textiles discovers neutron analysis techniques at ORNL

Yue Yuan, a second-year PhD student at NC State University’s Wilson College of Textiles, is working to create textiles that filter carbon dioxide (CO2) by using the latest scientific techniques in synthesis and imaging. Known as biocatalytic textiles, these materials could serve as sustainable scrubbers for CO2 capture by using enzymes trapped in bio-based polymers to catalyze the hydration of CO2.

Using neutrons from the TOPAZ beamline, which is optimal for locating hydrogen atoms in materials, ORNL researchers observed a single-crystal neutron diffraction structure of the insoluble carbonate salt formed by absorption of carbon dioxide from the air.

Neutrons—Capturing carbon in mid air

Researchers used neutron scattering at Oak Ridge National Laboratory’s Spallation Neutron Source to investigate the effectiveness of a novel crystallization method to capture carbon dioxide directly from the air.

Sean Hearne has been named director of the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory.

Hearne joins ORNL as director of the Center for Nanophase Materials Sciences

OAK RIDGE, Tenn., Feb. 8, 2019—The Department of Energy’s Oak Ridge National Laboratory has named Sean Hearne director of the Center for Nanophase Materials Sciences. The center is a DOE Office of Science User Facility that brings world-leading resources and capabilities to the nanoscience resear...