Argonne National Laboratory

Science Highlights

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Researchers from Argonne National Laboratory developed a first-principles-based, variable-charge force field that has shown to accurately predict bulk and nanoscale structural and thermodynamic properties of IrO2. Catalytic properties pertaining to the oxygen reduction reaction, which drives water-splitting for the production of hydrogen fuel, were found to depend on the coordination and charge transfer at the IrO2 nanocluster surface. (Image courtesy of Maria Chan, Argonne National Laboratory)
More accurate predictions for harvesting hydrogen with iridium oxide nanoparticles

Researchers from Argonne National Laboratory developed a first-principles-based, variable-charge force field that has shown to accurately predict bulk and nanoscale structural and thermodynamic properties of IrO2.

May 3, 2016
On the left, a schematic shows the experimental setup for measuring spin dynamics in a sample of YIG. On the right, a Brillouin light scattering map of a micro-sized bar of YIG excited via an electrical current through a platinum overlayer reveals a strong spin-wave localization in the center of the sample known as a “bullet.” The color red indicates a high-spin wave intensity and the color blue indicates an absence of spin waves. (Image provided by M. Benjamin Jungfleisch)
Could the future of low-power computing be magnetism?

Researchers at the U.S. Department of Energy's (DOE's) Argonne National Laboratory have made two recent advances in the field of spin-wave logic, or the potential use of magnetic spins to transmit and manipulate data.

February 15, 2016
Researchers at Argonne’s Center for Nanoscale Materials have confirmed the growth of self-directed graphene nanoribbons on the surface of the semiconducting material germanium by researchers at the University of Wisconsin at Madison. (Click on image to enlarge.)
One Direction: Researchers grow nanocircuitry with semiconducting graphene nanoribbons

Researchers from the University of Wisconsin at Madison are the first to grow self-directed graphene nanoribbons on the surface of the semiconducting material germanium. This allows the semiconducting industry to tailor specific paths for nanocircuitry in their technologies. The findings were confirmed at Argonne’s Center for Nanoscale Materials.

October 13, 2015
Three pairs of diffuse magnetic x-ray scattering intensities arising from three short-range zigzag states (illustrated at the center) in a honeycomb lattice iridate Na2IrO3. Distinct magnetic anisotropy of each state manifests bond-directional interactions that lead to a strong magnetic frustration. (Click image to enlarge.)
Argonne X-rays validate quantum magnetism model

Scientists at Argonne and Max Planck Institute for Solid State Research in Stuttgart, Germany have validated a theorized model of quantum magnetism by observing it firsthand in a honeycomb lattice.

May 20, 2015
Optical interferometric picture of the actuated micromechanical bridges used to manipulate and control the flow of plasmons in the new plasmonic phase modulator. The device can introduce a maximum of 5 rad of phase modulation with low insertion and excess losses. (Click to enlarge.)
New nano-mechanical plasmonic phase modulator offers electronics potential

By using standard semiconductor manufacturing equipment, a team of scientists demonstrated a nano-mechanical plasmon phase modulator that can control and manipulate the flow of plasmons at the nanoscale without any degradation in optical performance.

April 3, 2015
Silver particles improve performance of battery material

Argonne materials scientist Larry Curtiss is part of an Argonne team working on a new battery architecture that uses lithium-oxygen bonds as it stores and releases energy, and silver as the metal catalyst that makes this possible.

December 16, 2014
Ultrananocrystalline diamond thin films have shown a great deal of promise in the semiconductor and microelectromechanical systems industries. (Click image to enlarge).
Argonne researchers develop two new diamond inventions

Argonne researchers have continued their research into advanced ultrananocrystalline diamond technologies and have developed two new applications for this special material.

October 10, 2014
Argonne scientist Yugang Sun has been recognized as a leader in materials science and chemistry. Click to enlarge.
Two Argonne scientists recognized for their influence

Argonne scientists Yugang Sun and David Streets were recognized as being in the top one percent of the most highly cited scientists in their respective fields.

June 23, 2014
Shedding light on Nature’s nanoscale control of solar energy

A team of users from the Notre Dame Radiation Laboratory and Argonne have carried out experiments that shed new light on how photosynthesis occurs.

July 30, 2012
A 3-D map of nanopyramids in materials for LED lights. Credit: Nestor Zaluzec, Robert Colby and Eric Stach.
Shedding new light on LEDs

LEDs, or light-emitting diodes, are the secret behind your iPhone screen, flatscreen TVs, Christmas lights and crosswalk signals. They can last longer and save more energy than traditional incandescent bulbs. But there is one thing they aren’t very good at: efficiently emitting light in the yellow-green spectrum.

April 18, 2012