ASCR Highlights

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March 23, 2020
Compared to conventional manual grid measurement (left), the autonomous measurement method (right) produces a more accurate reconstruction of the sample’s shape (top row) by intelligently positioning measurements near features of interest (bottom row).
Artificial Intelligence Joins the Team for Smarter & Faster Experiments
Researchers have developed new artificial intelligence methods to enable “autonomous experimentation.”
February 5, 2020
Plasma edge temperature profile showing staircase formation and higher core temperature during bursting mode activity (blue) compared to the quiescent case where the staircase does not form (red).
Climbing the Staircase to Fusion
Forming a staircase in the edge of the plasmas can boost the performance of a fusion reactor.
January 30, 2020
Localizing the strain in an atomically-thin crystalline film regulated light emission. This approach patterned donut shapes in an array on a silicon dioxide support. A triangular crystal of tungsten disulfide grew over the donut shaped obstacles.
Stretched to the Limit and Sparkling on Curved Surfaces
Growing two-dimensional crystals on curved surfaces introduces strain to control the crystal’s light emission.
January 30, 2020
A designed coiled-coil heterodimer, with halves colored green and purple. A DNA double-helix (gold), for which particular sequences have the same property of forming specific pairs, is superimposed to show scale.
Breaking Through Computational Barriers to Create Designer Proteins
Using advanced computing, scientists designed protein pairs that perfectly complement each other.
January 30, 2020
The illustrations show how the correlation between lattice distortion and proton binding energy in a material affects proton conduction in different environments.
Simulations Identify Importance of Atomic-Level Distortions in Certain Fuel Cell Materials
Researchers determine how to design better materials for energy storage.
December 17, 2019
Snapshots in time of the simulation of turbulence in fusion plasma confined in an advanced field-reversed configuration (FRC).
Accelerating the Development of Nuclear Fusion
Developing computer models of the plasma in a unique device is helping a company take the next steps towards producing power.
December 17, 2019
Researchers used the new model to accurately identify clusters of gene mutations (spheres), which helped them study the emergence of various genetic diseases.
Summit Charts a Course to Uncover the Origins of Genetic Diseases
Researchers create the most complete model yet of complex protein machinery.
December 17, 2019
The interactions between electron spin and an external magnetic field allowed control how the material can dissipate energy – like controlling the drag on a car as it drives into head versus side winds.
A New Twist on Controlling Magnetic Properties
By rotating materials commonly used in computer storage devices, scientists found a new way to change their intrinsic properties.
December 17, 2019
Representative mass maps are shown both before (top) and after (bottom) cellular paroxysm for cytoskeletal (left) and membrane (right) disruption.
New Algorithms Shed Light on Molecules’ Structure and Motion in Cells
Algorithms supporting a “microscope in a computer” tool enable early screening of several major cancers.
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
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.
September 18, 2019
In metallic glasses, atoms are arranged randomly, leading to unique properties. These glasses are brittle. A map of calculated “strength” in the structure shows “hard” and “soft” spots. The team predicts the soft spots are the sites that initiate failure.
Even Hard Materials Have Soft Spots
Scientists find the weak points to facilitate industrial applications of metallic glasses.
August 23, 2019
A faceted metal island of the rare-earth element dysprosium formed under a layer of graphite. The team deposited the metal at 577 degrees Celsius after they bombarded graphite with argon ions.
Getting Metal Under Graphite’s Skin
A new route to make metal beneath a layer of graphite opens potentially new applications in solar cells and quantum computing.
August 23, 2019
Researchers used the Blanco telescope in conducting the Dark Energy Survey. The Milky Way is on the left of the sky, with the Magellanic clouds in the center.
Survey Delivers on Dark Energy with Multiple Probes
The Dark Energy Survey has delivered dark energy constraints combining information from four of its primary cosmological probes for the first time.
August 16, 2019
A representation of the shift of atoms after the electrons are excited by an ultrafast pulse of light. Before and after positions are superimposed, showing transitions. Scattering data taken at a tenth (top) and one picosecond (bottom).
Excited Atoms Rush Independently to New Positions
Ultrafast X-rays track how associated pairs of atoms find new locations when triggered by light.
August 15, 2019
Researchers ran their seismic sensor experiments on a 20-mile segment of the 13,000-mile-long ESnet Dark Fiber Testbed. The red section is the area of focus for ambient noise analysis; the blue section is collinear with an active rail line.
Science Network Turns Seismic Sensor
Dark fiber lays groundwork for long-distance earthquake detection and groundwater mapping.
August 6, 2019
Time series of a machine-learning–based coarse-grained simulation, ML-BOPdih, provides snapshots spanning ~1 microsecond (t=time) showing evolution of grain boundaries (green) between regions of hexagonal (blue) and cubic (orange) ice.
Machine Learning Helps Create Detailed, Efficient Models of Water
Models use a fraction of the computational cost of today’s best atom-based water models.
June 24, 2019
Example simulation of dark matter in the universe used as input to the CosmoFlow network.
Deep Learning Reveals Mysteries of Deep Space
Supercomputer use offers insights into how to best describe the nature of our universe.
June 14, 2019
Simulations of different geometric states of fluid (red) in rock (tan). Using the Titan supercomputer at Oak Ridge National Laboratory, researchers validated a geometric model for characterizing fluid flow in porous rock and geologic material from theory.
New Geometric Model Improves Predictions of Fluid Flow in Rock
Supercomputer validates mathematical approach for describing geological features.
June 12, 2019
Temperature distribution in wire-wrapped pin bundle shows hot spots near the wire-wrap contact with the solid pin.
High-Fidelity Multiphysics Simulations to Improve Nuclear Reactor Safety and Economics
Engineers can model heat distribution in reactor designs with fewer or no approximations.
June 11, 2019
The image illustrates this process and shows how two neutrons (shown as blue spheres in the background) beta decay into a neutron and a proton (shown as a red sphere) under the emission of an electron and a neutrino (small green and blue sphere).
Solving a Beta Decay Puzzle
Researchers use advanced nuclear models to explain 50-year mystery surrounding the process stars use to transform elements.
June 6, 2019
In the North-Central Atlantic Ocean near the center of the simulation snapshot, a hurricane is visible as a dot of gray and from the cold water (green) it stirred up in the otherwise warm (red) Central Atlantic Ocean.
Watching the Rain in Climate Models
Scientists use supercomputers to determine how reliably a popular Earth system model represents precipitation regionally and globally.
June 6, 2019
To determine key behaviors in a self-healing material—a composite of cement and a polymer—for underground wells, researchers built a simulation that explained molecular-level interactions.
Simulations Shed Light on Self-Healing Cement
A first-of-its-kind computer simulation reveals self-healing cement for geothermal and oil and gas wells performs better than originally thought.
June 5, 2019
The number density of electrons and positrons in a 3D relativistic plasma turbulence simulation. The energy cascade causes structures to form over a broad range of scales, spanning from microphysical scales (on the particle gyration scale) to the box size
Computer Simulation Shows Astrophysical Particle Acceleration
Particles act in a way that justifies extrapolating simulation results to astrophysical scales.
June 1, 2019
This side view of the STAR detector at the Relativistic Heavy Ion Collider (RHIC) shows the endcap electromagnetic calorimeter.
STAR Gains Access to “Wimpy” Quarks and Gluons
Low-momentum (wimpy) quarks and gluons contribute to proton spin, offering insights into protons’ behavior in all visible matter.