Neutron Science


Research Highlights

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Neutron Sciences Staff Give Back, Teach US Particle Accelerator School Courses
— About 50 students from around the world toured the Spallation Neutron Source accelerator tunnel at Oak Ridge National Laboratory as part of United States Particle Accelerator School last month.

Eighth Shull Fellow to Focus on Biochemistry and Crystallography
— Biochemist and molecular biologist Mayank Aggarwal has been awarded this year’s Clifford G. Shull Fellowship. Aggarwal is the eighth fellow to join the Neutron Sciences Directorate at Oak Ridge National Laboratory since the program began in 2006.

Comprehensive phonon “map” offers direction for engineering new thermoelectric devices
— To understand how to design better thermoelectric materials, researchers are using neutron scattering at SNS and HFIR to study how a compound known as AgSbTe2, or silver antimony telluride, is able to effectively prevent heat from propagating through it on the microscopic level.

Neutron Imaging Explored as Complementary Technique for Improving Cancer Detection
— Today’s range of techniques for detection of breast and other cancers include mammography, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, positron emission tomography (PET), and optical imaging. Each technology has advantages and disadvantages, with limitations either in spatial resolution or sensitivity.

Neutron Imaging Reveals Lithium Distribution in Lithium-Air Electrodes
— Using neutron-computed tomography, researchers at the CG-1D neutron imaging instrument at Oak Ridge National Laboratory’s High Flux Isotope Reactor (HFIR) have successfully mapped the three-dimensional spatial distribution of lithium products in electrochemically discharged lithium-air cathodes.

Neutron scattering characterizes dynamics in polymer family
— Understanding the interplay between structure and dynamics is the key to obtaining tailor-made materials. In the last few years, a large effort has been devoted to characterizing and relating the structure and dynamic properties in families of polymers with alkyl side groups.

Aerodynamic levitator allows samples to "float on air"
— To you and to me, glass is a window pane, a mirror, something to hold the claret. To scientists, however, glass is a liquid that has lost its mobility, yet keeps its memory of being a liquid.

Theory meets experiment: structure-property relationships in an electrode material for solid-oxide fuel cells
— Fuel cell technology is one potentially very efficient and environmentally friendly way to convert the chemical energy of fuels into electricity. Solid-oxide fuel cells (SOFCs) can convert a wide variety of fuels with simpler, cheaper designs than those used in liquid electrolyte cells.

Neutron diffraction reveals promising new phosphor for white lighting in LEDs
— That college student working bleary eyed at her laptop at 3 am, that football fan capturing a brilliant touchdown with his cellphone—both are relying on new white lighting technology based on light emitting diodes (LEDs).


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