Science Highlights

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Each year, scientists with the Office of Science, at our national laboratories, and supported by the Office of Science at the nation’s colleges and universities, publish thousands of research findings in the scientific literature. About 200 of these are selected annually by their respective program areas in the Office of Science as publication highlights of special note.

For the archive of past publication highlights, click here.

December 3, 2019
Forward image created by coarse-grained molecular dynamics simulation. It depicts a superlattice of nanoparticles (yellow) stabilized by ligands (blue). Background image of the superlattice taken by optical microscopy.
Super Nanoparticle Superlattices
Ligands allow fine tuning of nanoparticle superstructure properties.
December 3, 2019
Scanning electron microscopy image of a micro-mechanical X-ray mirror after removing mass on either side by focused ion beam (FIB) milling. Removing mass reduces its moment of inertia and increases its resonant frequency.
Ultrafast X-ray Optics
New optics technology can bring hard X-ray pulses down to a mere 300 picoseconds each.
December 3, 2019
Unassembled peptoids (artificial versions of small proteins) are generally found in the trans configuration, but after self-assembly into nanosheets, they switch to the cis configuration.
Shape-Shifters: Small Proteins Unexpectedly Shift Their Shape When Coming Together
Team of researchers discovered that peptoids can change shape when they form a nanosheet, which has potential to improve chemical sensors & much more.
November 25, 2019
The atomic structure of magnesium chloride changes shape after exposure to an electron beam. Using pulsed electron beams, researchers were able to image its structure at atomic scale resolution and picosecond time resolution without alteration.
Pulsed Electron Beams Provide a Softer Touch for Atomic-Scale Imaging
A new electron microscopy technique brings to light a plastic material’s atomic structure and has implications for renewable plastic.
November 25, 2019
3D-printed cone and sphere microstructures showcase customizable options for implantable electrodes used in neurotransmitter detection applications.
3D Printing Improves Tiny Electrodes for Medical Sensors
3D printing enables new shapes and sizes for biomedical devices.
November 25, 2019
(Top) Non-contact atomic force microscopy images can identify pollutant-causing atoms in aromatic hydrocarbon compounds found in crude oil. (Bottom) nc-AFM images of dibenzothiophene, carbazole, and acridine, with corresponding chemical structure.
Looking at Atoms in Molecules to Make Cleaner Fuels from Petroleum
New method quickly identifies atoms that are neither carbon nor hydrogen in small molecules and resolves their chemical structures in complex mixtures
November 18, 2019
The Tkachenko-Maslov model shows monomers cycling between “day” and “night” (top). Ultimately, the cycling process results in a complex system made from a small number of polymer fragments, with decreased information entropy (bottom).
Polymer Model Helps Explain the Origins of Life
The way the model reduces information in an increasingly complex system can be applied to make biopolymers and nanostructures.
November 18, 2019
The salt-extraction molecule is composed of six triazole “motifs” (computer-generated image). The motifs are five-membered rings composed of nitrogen, carbon and hydrogen. Together, these rings form a 3-D “cage” perfectly shaped to trap chloride.
How to Build a Better Salt Trap for Fresh Water
Molecular cage to trap chloride could help reduce rising level of salt contaminants flowing into freshwater streams & lakes across the United States.
November 18, 2019
This composite image shows an illustration of a carbon-rich red giant star (middle) warming an exoplanet (bottom left) and an overlay of a newly found chemical pathway that could enable complex carbons to form near these stars.
Revealing the Reactions Behind How Complex Carbon Molecules Form in Space
Understanding how polycyclic aromatic hydrocarbons form can help scientists better understand the origin and evolution of carbon in our galaxy.
November 5, 2019
Plasmonic artificial cells are formed by self-assembly of Au–Ag nanorods into hollow compartments.
Harvesting Energy from Light using Bio-inspired Artificial Cells
By mimicking biological machinery with non-biological parts, artificial cells work to convert light into chemical energy.
October 29, 2019
This simulation shows two dense neutron stars colliding. They have formed a black hole and a whirlpool of magnetized gas is orbiting around it. Some matter emerges in energetic jets and winds that will make heavy elements and flashes of detectible light.
The Aftermath of Neutron Star Collisions
New computer simulations reveal the explosive scene after ultra-dense stars collide, as well as where heavy elements may have originally formed.
October 29, 2019
(Top) Schematic of a rechargeable battery with magnesium (Mg) anode. (Bottom) Close-up of the Mg anode/electrolyte interface, showing the solid electrolyte interphase and formation of Mg nanocrystals during battery operation.
Nanocrystals Help Magnesium Batteries Go On-the-Move
Magnesium metal anodes display improved cycling and temperature performance capabilities for rechargeable magnesium batteries.
October 29, 2019
Dataflow in the design-to-device study for a panchromatic photovoltaic cell.
Investigating Dyes for Solar Cells from Start to Finish
Finding the right dyes for a new type of solar cell can be challenging, but this study used supercomputers to speed up the process.
October 22, 2019
When nanomaterials are attached to the surface-layer proteins of Caulobacter crescentus, the bacterium is transformed into a platform for creating self-assembling biomaterials.
Engineering Living Scaffolds for Building Materials
Researchers take cues from nature to form living materials with unprecedented control and versatility.
October 22, 2019
Artist's interpretation of “hypersurfaces” embedded in “noise space.” By combining experiments at different noise rates (spheres) and fitting hypersurfaces to the data (surfaces), Argonne scientists are able to recover “noise-free” quantum information.
Excavating Quantum Information Buried in Noise
New methods quiet noise and reduce error in measurements of elusive quantum properties.
October 22, 2019
A high-resolution microscopy image shows the atomic structure of a layered electronic material. The schematic shows electrons moving from the surface of the upper layer (lanthanum strontium manganese (Mn) oxide) to the interface with the substrate.
How Electrons Move in a Catastrophe
Layer-by-layer analysis uncovers microscopic mechanisms that affect thin film magnetism important to electronics.
October 16, 2019
This schematic drawing shows the apparatus, with the cryogenic ion trap shown in the inset, used to predict the behavior of ions more accurately.
When Ions and Molecules Cluster
New approach to studying ions accurately predicts behavior, providing insights for biological systems, environmental processes, materials development.
October 10, 2019
(left) Surface diffusion of lithium ions across battery nanoparticles changes an electrode. (right) A molecular dynamics simulation of liquid-assisted surface diffusion of lithium ions.
End-run Spreads Lithium Throughout Battery Electrodes
A new path is identified to keep lithium in its place during battery discharge, benefitting efforts to design better energy storage options.
October 9, 2019
Poplar cuttings inoculated with M. elongata strain PM193 (far right) grow larger in 30 percent forest soil / 70 percent sand than without PM193 (middle). On the left are controls grown in sterile sand. (Chih-Ming Hsu).
Fungus Fuels Tree Growth
Researchers start pinning down how a fungal symbiont spurs growth of poplar, a potential biofuel feedstock.
October 9, 2019
Model of the combination of factors that increase microbial diversity. Green arrows indicate higher diversity and red arrows indicate lower diversity with arrow thickness representing the strength of the effect.
Cultivating an Understanding of Microbial Diversity
Plant diversity, soil structure, and seasonality all influence microbial diversity in soil.
October 9, 2019
A research team from UC Berkeley found that hexokinase could act as a switch between photosynthesis and accumulation of bioproducts including lipids and antioxidants in algae.
Discovering an Internal Metabolic Switch in Algae
Discovering hexokinase as an algal regulator of lipids and high-value antioxidants will enable sustainable sources of biofuels and bioproducts.
September 24, 2019
On the left, a computer model depicts a self-assembled tetrahelix made up of tetrahedral quantum dots. On the right, a skeleton view of the tetrahelix demonstrates the chiral structure of the assembly.
Tune in to Tetrahedral Superstructures
Scientists image complex superstructures self-assembled from tetrahedral quantum dots, expanding our understanding of forming small, complex crystals.
September 24, 2019
Scientists produced this map of tiny glassy grains (blue with green specks) inside a cometary-type interplanetary dust particle using the FEI TitanX microscope at the Molecular Foundry. Carbonaceous material (red) holds these objects together.
Tracing Interstellar Dust Back to the Solar System’s Formation
Interplanetary particles offer insights into the chemistry of the cosmos.
September 18, 2019
Atomic scale views of irradiation-induced defects in titanium diboride after irradiation at ~200 degrees Celsius.
Investigating Materials that Can Go the Distance in Fusion Reactors
A test of titanium diboride opens the door to a potential new class of materials for fusion reactor applications.
September 18, 2019
Seung Joon Lee holds the variable angle slant hole collimator. This device can help a breast molecular imaging system get six times better contrast of cancer lesions, providing the same or better image quality while potentially halving the radiation dose.
Better 3-D Imaging of Tumors in the Breast with Less Radiation
A new device may provide up to six times better contrast of tumors in the breast, while halving the radiation dose to patients.