Science Highlights

Date Postedsort descending
Atomic “speckle," caused by the interaction of an X-ray beam with itself, could give scientists more information about the thermodynamic properties of a material system.
Twinkle, Twinkle, Little Atom

By using extremely short bursts of intense X-rays, a team of researchers from Argonne, McGill University, Boston University, DESY and LCLS is able to investigate the “speckle” patterns that are generated when a coherent X-ray beam of light interacts with a material, especially liquids.

November 2, 2012
“Single crystals are ideal materials to obtain a fundamental insight into the processes that are controlling reaction rate,” said Argonne physical chemist and materials scientist Vojislav Stamenkovic.
Looking at electrocatalysis at mesoscale

In the quest to develop technologies that can efficiently convert and store energy from electrochemical systems, scientists at the U.S. Department of Energy’s Argonne National Laboratory have designed new materials that can substantially improve the performance of the current state-of-the-art electrocatalysts.

December 4, 2012
In roaming radical reactions, one bond in a molecule becomes greatly extended and, before the nascent radicals completely separate, they reorient and react, leading to unexpected products.
Dynamic separability of multiple reaction pathways

Paper shows that tight and roaming pathways may be treated as separable to a good approximation. Authors identify features of the potential energy landscape that serve as mechanism dividers.

April 15, 2013
A look at the Advanced Photon Source. To view a larger version of the image, click on it.
The superpower behind iron oxyfluoride battery electrodes

A team of scientists utilized high-energy X-rays from the U.S. Department of Energy’s Advanced Photon Source at Argonne National Laboratory to investigate the fundamental basis for the performance advantage offered by mixed-anion iron oxyfluoride conversion electrodes over electrodes made of simple oxide or fluoride phases.

April 18, 2013
To view a larger version of the image, click on it.
First look at cellulose’s early production could hold keys to bacteria-free medical devices, better biofuel

By using the high-energy X-rays produced by the Advanced Photon Source at the U.S. Department of Energy’s Argonne National Laboratory, researchers from the University of Virginia have discovered how cellulose is produced at the molecular level.

May 14, 2013
The drug Votrient, or Pazopanib, was approved in 2009 to fight advanced kidney cancer and in 2012 to fight advanced soft tissue sarcoma. Now, according to a New York Times article, a new study shows the drug may delay ovarian cancer relapses.
Study shows possible expanded use for cancer drug

A cancer drug developed at the Advanced Photon Source may be following a local tradition and going for a Chicago Bulls-like three-peat.

June 5, 2013
Structure of HetR–DNA complex
Structures of complexes comprised of Fischerella transcription factor HetR with Anabaena DNA targets

The three-dimensional structures of the protein called HetR from cyanobacterium Anabaena in complex with symmetric DNA were determined during this research project.

June 11, 2013
Current dependence of (a) non-linear amplication factor (1 + v2), and (b) integrated power at the three angles.
Motion of nanomagnet oscillators

Nanopillars consisting of two magnetic layers separated by an insulating or non-magnetic metal can exhibit oscillations: a constant current can make the magnetization in one layer precess with frequencies in the gigahertz range.

July 15, 2013
TOP: cluster model of drug intercalated in between two Watson-Crick base-pairs connected by sugar puckers and phosphate groups. BOTTOM: neutral “wild-type” ellipticine, R equation image denote sites of groups permitted to mutate. To view a larger version of the image, click on it.
Machine-learning algorithm aims to accelerate materials discovery

A research team is developing an algorithm that combines quantum chemistry with machine learning (artificial intelligence) to enable atomistic simulations that predict the properties of new materials with unprecedented speed.

July 16, 2013
Distribution of AEZs in the United States. To view a larger version of the image, click on it.
Land-use change and greenhouse gas emissions from corn and cellulosic ethanol

This paper investigates the effect of several key domestic lands carbon content modelling parameters on LUC GHG emissions.

July 16, 2013